pitch

pitch¹

P0333400 (pĭch)n.1. Any of various thick, dark, sticky substances obtained from the distillation residue of coal tar, wood tar, or petroleum and used for waterproofing, roofing, caulking, and paving.2. Any of various natural bitumens, such as mineral pitch or asphalt.3. A resin derived from the sap of various coniferous trees, as the pines.tr.v. pitched, pitch·ing, pitch·es To smear or cover with pitch.

[Middle English pich, from Old English pic and from Anglo-Norman piche, both from Latin pix, pic-.]

pitch²

P0333400 (pĭch)v. pitched, pitch·ing, pitch·es v.tr.1. a. To throw, usually with careful aim. See Synonyms at throw.b. To discard by throwing: pitched my worn-out sneakers.2. Baseball a. To throw (the ball) from the mound to the batter.b. To play (a game or part of a game) as pitcher.c. To assign as pitcher: The manager decided to pitch a left-hander.3. To erect or establish; set up: pitched a tent; pitch camp.4. To set firmly; implant; embed: pitched stakes in the ground.5. To set at a specified downward slant: pitched the roof at a steep angle.6. a. To set at a particular level, degree, or quality: pitched her expectations too high.b. Music To set the pitch or key of.c. To adapt so as to be applicable; direct: pitched his speech to the teenagers in the audience.7. Informal To attempt to promote or sell, often in a high-pressure manner: "showed up on local TV to pitch their views" (Business Week).8. Sports To hit (a golf ball) in a high arc with backspin so that it does not roll very far after striking the ground.9. Games a. To lead (a card), thus establishing the trump suit.b. To discard (a card other than a trump and different in suit from the card led).v.intr.1. To throw or toss something, such as a ball, horseshoe, or bale.2. Baseball To play in the position of pitcher.3. To plunge headlong: He pitched over the railing.4. a. To stumble around; lurch.b. To buck, as a horse.5. a. Nautical To dip bow and stern alternately.b. To oscillate about a lateral axis so that the nose lifts or descends in relation to the tail. Used of an aircraft.c. To oscillate about a lateral axis that is both perpendicular to the longitudinal axis and horizontal to the earth. Used of a missile or spacecraft.6. To slope downward: The hill pitches steeply.7. To set up living quarters; encamp; settle.8. Sports To hit a golf ball in a high arc with backspin so that it does not roll very far after striking the ground.n.1. The act or an instance of pitching.2. Baseball a. A throw of the ball by the pitcher to the batter.b. A ball so thrown: hit the pitch into left field.3. Sports A playing field. Also called wicket.4. a. Nautical The alternate dip and rise of a vessel's bow and stern.b. The alternate lift and descent of the nose and tail of an airplane.5. a. A steep slope.b. The degree of such a slope.c. Sports A single interval between ledges or anchors used as belaying points in mountaineering: a climb of six pitches.6. Architecture a. The angle of a roof.b. The highest point of a structure: the pitch of an arch.7. A level or degree, as of intensity: worked at a feverish pitch.8. a. Acoustics The distinctive quality of a sound, dependent primarily on the frequency of the sound waves produced by its source.b. Music The relative position of a tone within a range of musical sounds, as determined by this quality.c. Music Any of various standards for this quality associating each tone with a particular frequency.9. a. The distance traveled by a machine screw in a single revolution.b. The distance between two corresponding points on adjacent screw threads or gear teeth.c. The distance between two corresponding points on a helix.10. The distance that a propeller would travel in an ideal medium during one complete revolution, measured parallel to the shaft of the propeller.11. Informal a. A line of talk designed to persuade: "[his] pious pitch for ... austerity" (Boston Globe).b. An advertisement.12. Chiefly British The stand of a vendor or hawker.13. Games See seven-up.14. Printing The density of characters in a printed line, usually expressed as characters per inch.Phrasal Verbs: pitch in Informal 1. To set to work vigorously.2. To join forces with others; help or cooperate. pitch into Informal To attack verbally or physically; assault. pitch on/upon Informal To succeed in choosing or achieving, usually quickly: pitched on the ideal solution.

[Middle English pichen, probably from Old English *piccean, causative of *pīcian, to prick.]

pitch

(pɪtʃ) vb1. to hurl or throw (something); cast; fling2. (usually tr) to set up (a camp, tent, etc)3. (tr) to place or thrust (a stake, spear, etc) into the ground4. (intr) to move vigorously or irregularly to and fro or up and down5. (tr) to aim or fix (something) at a particular level, position, style, etc: if you advertise privately you may pitch the price too low. 6. (Marketing) (tr) to aim to sell (a product) to a specified market or on a specified basis7. (intr) to slope downwards8. (intr) to fall forwards or downwards9. (Nautical Terms) (intr) (of a vessel) to dip and raise its bow and stern alternately10. (Cricket) cricket to bowl (a ball) so that it bounces on a certain part of the wicket, or (of a ball) to bounce on a certain part of the wicket11. (Aeronautics) (intr) (of a missile, aircraft, etc) to deviate from a stable flight attitude by movement of the longitudinal axis about the lateral axis. Compare yaw¹, roll¹⁴12. (Golf) (tr) (in golf) to hit (a ball) steeply into the air, esp with backspin to minimize roll13. (Music, other) (tr) music a. to sing or play accurately (a note, interval, etc)b. (usually passive) (of a wind instrument) to specify or indicate its basic key or harmonic series by its size, manufacture, etc14. (Card Games) (tr) cards to lead (a suit) and so determine trumps for that trick15. (Baseball) baseball a. (tr) to throw (a baseball) to a batterb. (intr) to act as pitcher in a baseball game16. dialect Southwest English (used with: it as subject) to snow without the settled snow melting17. in there pitching informal US and Canadian taking part with enthusiasm18. pitch a tale pitch a yarn to tell a story, usually of a fantastic naturen19. the degree of elevation or depression20. a. the angle of descent of a downward slopeb. such a slope21. the extreme height or depth22. (Mountaineering) mountaineering a section of a route between two belay points, sometimes equal to the full length of the rope but often shorter23. (Architecture) the degree of slope of a roof, esp when expressed as a ratio of height to span24. (General Engineering) the distance between corresponding points on adjacent members of a body of regular form, esp the distance between teeth on a gearwheel or between threads on a screw thread25. (General Engineering) the distance between regularly spaced objects such as rivets, bolts, etc26. the pitching motion of a ship, missile, etc27. (Aeronautics) a. the distance a propeller advances in one revolution, assuming no slipb. the blade angle of a propeller or rotor28. the distance between the back rest of a seat in a passenger aircraft and the back of the seat in front of it29. (Music, other) music a. the auditory property of a note that is conditioned by its frequency relative to other notes: high pitch; low pitch. b. an absolute frequency assigned to a specific note, fixing the relative frequencies of all other notes. The fundamental frequencies of the notes A–G, in accordance with the frequency A = 440 hertz, were internationally standardized and accepted in 1939. See also concert pitch¹, international pitch30. (Cricket) cricket the rectangular area between the stumps, 22 yards long and 10 feet wide; the wicket31. (Geological Science) geology the inclination of the axis of an anticline or syncline or of a stratum or vein from the horizontal32. (Card Games) another name for seven-up33. (Cricket) the act or manner of pitching a ball, as in cricket34. (Commerce) chiefly Brit a vendor's station, esp on a pavement35. (Marketing) slang a persuasive sales talk, esp one routinely repeated36. (General Sporting Terms) chiefly Brit (in many sports) the field of play37. (Golf) golf Also called: pitch shot an approach shot in which the ball is struck in a high arc38. make a pitch for slang a. to give verbal support tob. to attempt to attract (someone) sexually or romantically39. queer someone's pitch informal Brit to upset someone's plans[C13 picchen; possibly related to pick¹]

pitch

(pɪtʃ) n1. (Elements & Compounds) any of various heavy dark viscid substances obtained as a residue from the distillation of tars. See also coal-tar pitch2. (Elements & Compounds) any of various similar substances, such as asphalt, occurring as natural deposits3. (Elements & Compounds) any of various similar substances obtained by distilling certain organic substances so that they are incompletely carbonized4. (Elements & Compounds) crude turpentine obtained as sap from pine trees. vb (tr) to apply pitch to (something)[Old English pic, from Latin pix]

pitch¹

(pɪtʃ)

v.t. 1. to erect or set up (a tent, camp, or the like). 2. to put, set, or plant in a fixed or definite place or position. 3. to throw, fling, hurl, or toss. 4. Baseball. a. to deliver or serve (the ball) to the batter. b. to serve as pitcher of (a game). 5. to set at a certain point, degree, level, etc.: He pitched his hopes too high. 6. to establish the musical key of. 7. to set or build with a downward slope: a pitched roof. 8. to pave or revet with small stones. 9. Informal. to attempt to sell or win approval for; promote; advertise: to pitch cereals at a sales convention. v.i. 10. to plunge or fall forward or headlong. 11. to lurch. 12. to throw or toss. 13. Baseball. a. to deliver or serve the ball to the batter. b. to fill the position of pitcher. 14. to slope downward; dip. 15. to plunge with alternate fall and rise of bow and stern, as a ship. 16. (of a rocket or guided missile) to deviate from a stable flight attitude by oscillations of the longitudinal axis in a vertical plane about the center of gravity. 17. to fix a tent or temporary habitation; encamp. 18. Golf. to play a pitch shot. 19. pitch in, Informal. to contribute to a common cause. 20. pitch into, Informal. to attack verbally or physically. n. 21. relative point, position, or degree: a high pitch of excitement. 22. the degree of inclination or slope; angle. 23. (in music, speech, etc.) the degree of height or depth of a tone or of sound, depending upon the relative rapidity of the vibrations by which it is produced. 24. Music. the particular tonal standard with which given tones may be compared in respect to their relative level. 25. the apparent predominant frequency sounded by an acoustical source. 26. the act or manner of pitching. 27. a throw or toss. 28. Baseball. the serving of the ball to the batter by the pitcher. 29. a pitching movement, as of a ship. 30. a sloping part or place: the pitch of a hill. 31. a quantity of something pitched or placed somewhere. 32. Cricket. the central part of the field; area between the wickets. 33. Informal. a sales talk, often high-pressured. 34. Aeron. a. the nosing of an airplane or spacecraft up or down about a transverse axis. b. the distance that a given propeller would advance in one revolution. 35. (of a rocket or guided missile) a. the motion due to pitching. b. the extent of the rotation of the longitudinal axis involved in pitching. 36. Geol. the inclination of a linear feature, as the axis of a fold or an oreshoot, from the horizontal. 37. a. the distance between the corresponding surfaces of two adjacent gear teeth, measured between perpendiculars to the root surfaces. b. the distance between any two adjacent things in a series, as screw threads or rivets. 38. Cards. all fours (def. 2). 39. a unit of typographic measurement indicating the number of characters to a horizontal inch. [1175–1225; Middle English picchen to thrust, pierce, set up (a tent, etc.), array, throw]

pitch²

(pɪtʃ)

n. 1. any of various dark, tenacious, and viscous substances for caulking and paving, consisting of the residue of the distillation of coal tar or wood tar. 2. any of certain bitumens, as asphalt: mineral pitch. 3. any of various resins. 4. the sap or crude turpentine that exudes from the bark of pines. v.t. 5. to smear or cover with pitch. [before 900; Middle English pich, Old English pic < Latin pic- (s. of pix), whence also Dutch pek, German Pech; akin to Greek píssa pitch]

pitch

(pĭch)1. A thick, tar-like substance used for roofing, waterproofing, and paving.2. Any of various natural bitumens, such as asphalt, having similar uses.3. A resin derived from the sap of a cone-bearing tree, such as a pine.

pitch

1. The movement of an aircraft or ship about its transverse axis.
2. In air photography, the camera rotation about the transverse axis of the aircraft. Also called tip.

pitch

Past participle: pitched
Gerund: pitching

Imperative
pitch
pitch

Present
I pitch
you pitch
he/she/it pitches
we pitch
you pitch
they pitch

Preterite
I pitched
you pitched
he/she/it pitched
we pitched
you pitched
they pitched

Present Continuous
I am pitching
you are pitching
he/she/it is pitching
we are pitching
you are pitching
they are pitching

Present Perfect
I have pitched
you have pitched
he/she/it has pitched
we have pitched
you have pitched
they have pitched

Past Continuous
I was pitching
you were pitching
he/she/it was pitching
we were pitching
you were pitching
they were pitching

Past Perfect
I had pitched
you had pitched
he/she/it had pitched
we had pitched
you had pitched
they had pitched

Future
I will pitch
you will pitch
he/she/it will pitch
we will pitch
you will pitch
they will pitch

Future Perfect
I will have pitched
you will have pitched
he/she/it will have pitched
we will have pitched
you will have pitched
they will have pitched

Future Continuous
I will be pitching
you will be pitching
he/she/it will be pitching
we will be pitching
you will be pitching
they will be pitching

Present Perfect Continuous
I have been pitching
you have been pitching
he/she/it has been pitching
we have been pitching
you have been pitching
they have been pitching

Future Perfect Continuous
I will have been pitching
you will have been pitching
he/she/it will have been pitching
we will have been pitching
you will have been pitching
they will have been pitching

Past Perfect Continuous
I had been pitching
you had been pitching
he/she/it had been pitching
we had been pitching
you had been pitching
they had been pitching

Conditional
I would pitch
you would pitch
he/she/it would pitch
we would pitch
you would pitch
they would pitch

Past Conditional
I would have pitched
you would have pitched
he/she/it would have pitched
we would have pitched
you would have pitched
they would have pitched

pitch

1. (sports) field2. Sound frequency.

Thesaurus

Noun	1.	pitch - the property of sound that varies with variation in the frequency of vibrationsound property - an attribute of soundconcert pitch, international pitch, philharmonic pitch - the pitch used to tune instruments for concert performances; usually assigns 440 Hz to the A above middle Chigh pitch, high frequency - a pitch that is perceived as above other pitchestreble, soprano - the pitch range of the highest female voicetenor - the pitch range of the highest male voicekey - pitch of the voice; "he spoke in a low key"low pitch, low frequency - a pitch that is perceived as below other pitchesalto - the pitch range of the lowest female voicealto - (of a musical instrument) the second highest instrument in a family of musical instrumentsbass - the lowest part of the musical rangetone - (linguistics) a pitch or change in pitch of the voice that serves to distinguish words in tonal languages; "the Beijing dialect uses four tones"tune - the property of producing accurately a note of a given pitch; "he cannot sing in tune"; "the clarinet was out of tune"
	2.	pitch - (baseball) the act of throwing a baseball by a pitcher to a batterdeliverythrow - the act of throwing (propelling something with a rapid movement of the arm and wrist); "the catcher made a good throw to second base"balk - an illegal pitching motion while runners are on baseball - a pitch that is not in the strike zone; "he threw nine straight balls before the manager yanked him"beanball, beaner - a baseball deliberately thrown at the batter's headchange-of-pace, change-of-pace ball, change-up, off-speed pitch - a baseball thrown with little velocity when the batter is expecting a fastballbreaking ball, curve ball, bender, curve - a pitch of a baseball that is thrown with spin so that its path curves as it approaches the batterduster - a pitch thrown deliberately close to the batterfastball, heater, hummer, bullet, smoke - (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"knuckleball, knuckler - a baseball pitch thrown with little speed or spinoverhand pitch - a baseball pitch in which the hand moves above the shoulderpassed ball - a pitch that the catcher should have caught but did not; allows a base runner to advance a basescrewball - a pitch with reverse spin that curves toward the side of the plate from which it was thrownsinker - a pitch that curves downward rapidly as it approaches the platespitball, spitter - an illegal pitch in which a foreign substance (spit or Vaseline) is applied to the ball by the pitcher before he throws itstrike - (baseball) a pitch that the batter swings at and misses, or that the batter hits into foul territory, or that the batter does not swing at but the umpire judges to be in the area over home plate and between the batter's knees and shoulders; "this pitcher throws more strikes than balls"submarine ball, submarine pitch - a pitch thrown sidearm instead of overheadwild pitch - an errant pitch that the catcher cannot be expected to catch and that allows a base runner to advance a basebaseball, baseball game - a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs; "he played baseball in high school"; "there was a baseball game on every empty lot"; "there was a desire for National League ball in the area"; "play ball!"
	3.	pitch - a vendor's position (especially on the sidewalk); "he was employed to see that his paper's news pitches were not trespassed upon by rival vendors"position, place - the particular portion of space occupied by something; "he put the lamp back in its place"Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
	4.	pitch - promotion by means of an argument and demonstrationsales pitch, sales talkpromotion, promotional material, publicity, packaging - a message issued in behalf of some product or cause or idea or person or institution; "the packaging of new ideas"
	5.	pitch - degree of deviation from a horizontal plane; "the roof had a steep pitch"rake, slantgradient, slope - the property possessed by a line or surface that departs from the horizontal; "a five-degree gradient"loft - (golf) the backward slant on the head of some golf clubs that is designed to drive the ball high in the air
	6.	pitch - any of various dark heavy viscid substances obtained as a residuetarbitumen - any of various naturally occurring impure mixtures of hydrocarbonscoal tar - a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds
	7.	pitch - a high approach shot in golf pitch shotapproach shot, approach - a relatively short golf shot intended to put the ball onto the putting green; "he lost the hole when his approach rolled over the green"
	8.	pitch - an all-fours game in which the first card led is a trumpauction pitchall fours, high-low-jack - card games in which points are won for taking the high or low or jack or game
	9.	pitch - abrupt up-and-down motion (as caused by a ship or other conveyance); "the pitching and tossing was quite exciting"pitching, lurchmovement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"careen, sway, tilt, rock - pitching dangerously to one sideship - a vessel that carries passengers or freight
	10.	pitch - the action or manner of throwing something; "his pitch fell short and his hat landed on the floor"throw - the act of throwing (propelling something with a rapid movement of the arm and wrist); "the catcher made a good throw to second base"
Verb	1.	pitch - throw or toss with a light motion; "flip me the beachball"; "toss me newspaper"sky, toss, flipfling - throw with force or recklessness; "fling the frisbee"submarine - throw with an underhand motionlag - throw or pitch at a mark, as with coinsthrow back, toss back - throw back with a quick, light motion; "She tossed back her head"
	2.	pitch - move abruptly; "The ship suddenly lurched to the left"lurch, shiftmove - move so as to change position, perform a nontranslational motion; "He moved his hand slightly to the right"
	3.	pitch - fall or plunge forward; "She pitched over the railing of the balcony"come down, descend, go down, fall - move downward and lower, but not necessarily all the way; "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again"
	4.	pitch - set to a certain pitch; "He pitched his voice very low"set - put into a certain state; cause to be in a certain state; "set the house afire"
	5.	pitch - sell or offer for sale from place to placehawk, huckster, monger, peddle, vendsell, trade, deal - do business; offer for sale as for one's livelihood; "She deals in gold"; "The brothers sell shoes"
	6.	pitch - be at an angle; "The terrain sloped down"slope, inclineascend - slope upwards; "The path ascended to the top of the hill"stoop - sag, bend, bend over or down; "the rocks stooped down over the hiking path"fall - slope downward; "The hills around here fall towards the ocean"climb - slope upward; "The path climbed all the way to the top of the hill"dip - slope downwards; "Our property dips towards the river"lean, tilt, angle, slant, tip - to incline or bend from a vertical position; "She leaned over the banister"
	7.	pitch - heel over; "The tower is tilting"; "The ceiling is slanting"cant, cant over, tilt, slantmove - move so as to change position, perform a nontranslational motion; "He moved his hand slightly to the right"cock - tilt or slant to one side; "cock one's head"
	8.	pitch - erect and fasten; "pitch a tent"set upcamp down, camp - establish or set up a camperect, rear - cause to rise up
	9.	pitch - throw or hurl from the mound to the batter, as in baseball; "The pitcher delivered the ball"deliverthrow - propel through the air; "throw a frisbee"
	10.	pitch - hit (a golf ball) in a high arc with a backspinhit - cause to move by striking; "hit a ball"
	11.	pitch - lead (a card) and establish the trump suitcard game, cards - a game played with playing cardsplay - put (a card or piece) into play during a game, or act strategically as if in a card game; "He is playing his cards close to his chest"; "The Democrats still have some cards to play before they will concede the electoral victory"
	12.	pitch - set the level or character of; "She pitched her speech to the teenagers in the audience"gearadapt, accommodate - make fit for, or change to suit a new purpose; "Adapt our native cuisine to the available food resources of the new country"popularise, popularize - make understandable to the general public; "Carl Sagan popularized cosmology in his books"

pitch

²noun tar, asphalt, bitumen The timbers of the houses were painted with pitch.Related words
adjective piceous

pitch

verb1. To send through the air with a motion of the hand or arm:cast, dart, dash, fling, heave, hurl, hurtle, launch, shoot, shy, sling, throw, toss.Informal: fire.2. To raise upright:erect, put up, raise, rear, set up, upraise, uprear.3. To come to the ground suddenly and involuntarily:drop, fall, go down, nose-dive, plunge, spill, topple, tumble.Idiom: take a fall.4. To lean suddenly, unsteadily, and erratically from the vertical axis:lurch, roll, seesaw, yaw.5. To move vigorously from side to side or up and down:heave, rock, roll, toss.6. To slope downward:decline, descend, dip, drop, fall, sink.7. Informal. To make known vigorously the positive features of (a product):advertise, ballyhoo, build up, cry (up), popularize, promote, publicize, talk up.Informal: plug.Slang: push.phrasal verb
pitch intoInformal. To set upon with violent force:aggress, assail, assault, attack, beset, fall on (or upon), go at, have at, sail into, storm, strike.Informal: light into.noun1. An act of throwing:cast, fling, heave, hurl, launch, shy, sling, throw, toss.2. A sudden involuntary drop to the ground:dive, fall, nosedive, plunge, spill, tumble.Informal: header.3. A downward slope or distance:decline, declivity, descent, drop, fall.4. Exceptionally great concentration, power, or force, especially in activity:depth (often used in plural), ferociousness, ferocity, fierceness, fury, intensity, severity, vehemence, vehemency, violence.5. Informal. A systematic effort or part of this effort to increase the importance or reputation of by favorable publicity:advertisement, ballyhoo, buildup, promotion, publicity, puffery.Informal: plug.Slang: hype.

Translations

商贩摆摊场地定调定音调扎营扔

pitch¹

(pitʃ) verb1. to set up (a tent or camp). They pitched their tent in the field. 搭（帐），扎（营） 2. to throw. He pitched the stone into the river.扔3. to (cause to) fall heavily. He pitched forward.摔倒4. (of a ship) to rise and fall violently. The boat pitched up and down on the rough sea.颠簸5. to set (a note or tune) at a particular level. He pitched the tune too high for my voice.定音调 noun1. the field or ground for certain games. a cricket-pitch; a football pitch.表演场地2. the degree of highness or lowness of a musical note, voice etc. 音高标准3. an extreme point or intensity. His anger reached such a pitch that he hit her.程度4. the part of a street etc where a street-seller or entertainer works. He has a pitch on the High Street.商贩摆摊场地5. the act of pitching or throwing or the distance something is pitched. That was a long pitch.投掷6. (of a ship) the act of pitching. （船的）纵摇 -pitched of a (certain) musical pitch. a high-pitched / low-pitched voice.音调ˈpitcher noun a person who pitches especially (in baseball) the player who throws the ball. 投手pitched battle a battle between armies that have been prepared and arranged for fighting beforehand. They fought a pitched battle.对阵战ˈpitchfork noun a large long-handled fork for lifting and moving hay. 干草叉

pitch²

(pitʃ) noun a thick black substance obtained from tar. as black as pitch.沥青ˌpitch-ˈblack, ˌpitch-ˈdark adjective as black, or dark, as pitch; completely black or dark. Outside the house it was pitch-black; It's a pitch-dark night.漆黑的

pitch

→ 定调zhCN, 投zhCN, 球场zhCN

Can we pitch our tent here? → 我们能在这儿扎帐篷吗？

pitch

pitch,

in aviation: see airplaneairplane,
aeroplane,
or aircraft,
heavier-than-air vehicle, mechanically driven and fitted with fixed wings that support it in flight through the dynamic action of the air.
..... Click the link for more information. ; airfoilairfoil,
surface designed to develop a desired force by reaction with a fluid, especially air, that is flowing across the surface. For example, the fixed wing surfaces of an airplane produce lift, which opposes gravity.
..... Click the link for more information. .

pitch,

in music, the position of a tone in the musical scalescale,
in music, any series of tones arranged in a step-by-step rising or falling order of pitch. A scale defines the interval relationship of each tone to the others upon which the composition depends.
..... Click the link for more information. , today designated by a letter name and determined by the frequency of vibration of the source of the tone. Pitch is an attribute of every musical tone; the fundamental, or first harmonicharmonic.
1 Physical term describing the vibration in segments of a sound-producing body (see sound). A string vibrates simultaneously in its whole length and in segments of halves, thirds, fourths, etc.
..... Click the link for more information. , of any tone is perceived as its pitch. The earliest successful attempt to standardize pitch was made in 1858, when a commission of musicians and scientists appointed by the French government settled upon an A of 435 cycles per second; this standard was adopted by an international conference at Vienna in 1889. In the United States, however, the prevailing standard is an A of 440 cycles per second. Before the middle of the 19th cent., pitch varied according to time, place, and medium of musical performance; since the classical period the trend has been gradually upward. The relative pitch of a tone, in contrast to absolute pitchabsolute pitch,
the position of a tone in the musical scale determined according to its number of vibrations per second, irrespective of other tones. The term also denotes the capacity to identify any tone upon hearing it sounded alone or to sing any specified tone.
..... Click the link for more information. , is an expression of its pitch in relation to the pitch of some other tone taken as a standard.

pitch:

see tar and pitchtar and pitch,
viscous, dark-brown to black substances obtained by the destructive distillation of coal, wood, petroleum, peat, and certain other organic materials. The heating or partial burning of wood to make charcoal yields tar as a byproduct and is an ancient method for the
..... Click the link for more information. .

Pitch

Angle of a roof, or the proportion between the height and span of the roof.

Pitch

a readily melting, bituminous substance, insoluble in water.

Light and black pitch are distinguished. Black pitch is a product of the processing of ligneous or coal tars; it is used in the production of compound filler in shoe manufacture.

Light pitch is composed of rosin, petroleum oils, paraffin, wax, and several other substances; it is used to impregnate fibers in shoe manufacture and also in the production of putties, particularly gardening putty, which is used to cover grafts and wounds caused by pruning or damage to trees. Gardening putty keeps the injured areas in plants from drying out and protects these areas from water, air, bacteria, fungi, and insects.

Pitch

the residue from the distillation of coking, semicoking, shale, pyrolytic, or other resins, and also of peat tar or wood tar. It is a solid (sometimes thick and viscous) black mass with a conchoidal fracture upon impact. It is plastic under a constant load.

A distinction is made among coal pitch, peat pitch, wood pitch, and petroleum pitch, according to the initial material. Coal pitch is composed predominantly of macromolecular aromatic hydrocarbons; it also contains higher phenols and organic bases. The insoluble fraction of pitch contains 8–30 percent free carbon, depending on the softening point; 0.2 percent and more ash; and asphaltenes. The density is 1.2–1.3 g/cm³.

Pitch is not electrically conductive. It is insoluble in water (peat and wood pitch contain small quantities of water-soluble substances) but soluble in many organic solvents, such as pyridine and benzene; it is resistant to acids. Pitch is mainly used in the preparation of electrode (ash-free) coke, as a binder in the briquetting of solid fuels, as waterproofing material, in the manufacture of tar paper and roofing felt, and in the preparation of varnishes for dyeing metal structures.

D. D. ZYKOV

Pitch

the angular motion of an aircraft or vessel relative to the principal lateral axis of inertia. The pitch attitude is the angle between the longitudinal axis of the aircraft or vessel and the horizontal plane. In aviation, two types of pitch are distinguished: pitch with an increase in the pitch attitude and pitch with a decrease in the pitch attitude. Each is controlled by use of the aircraft’s elevators.

pitch

[pich] (acoustics) That psychological property of sound characterized by highness or lowness, depending primarily upon frequency of the sound stimulus, but also upon its sound pressure and waveform. (architecture) The ratio of the rise of a roof to its span. (cell and molecular biology) The distance between two adjacent turns of double-stranded deoxyribonucleic acid. (computer science) The distance between the centerlines of adjacent rows of hole positions in punched paper tape. (design engineering) The distance between similar elements arranged in a pattern or between two points of a mechanical part, as the distance between the peaks of two successive grooves on a disk recording or on a screw. (geology) plunge (graphic arts) The number of characters printed per horizontal inch on a typewriter or computer printer. (materials) A dark heavy liquid or solid substance obtained as a residue after distillation of tar, oil, and such materials; occurs naturally as asphalt. (mechanics) Of an aerospace vehicle, an angular displacement about an axis parallel to the lateral axis of the vehicle. The rising and falling motion of the bow of a ship or the tail of an airplane as the craft oscillates about a transverse axis. (science and technology) The inclination or degree of slope of an object or structure.

pitch

1. The slope of a roof, usually expressed as a ratio of vertical rise to horizontal run, or in inches (centimeters) of rise per foot (meter) of run. 2.See grade. 3. The slope of a stair flight, i.e., the ratio of the rise to the run of the flight. 4. The distance between centers of bolts, rivets, and other fasteners in the same line. 5.See carpet pitch. 6. In acoustics, that attribute of auditory sensation in which sounds may be ordered on a scale from low to high; depends primarily on the frequency of the sound stimulus. 7. Any of various resins. 8. A dark, viscous, distillate of tar; used in caulking and paving; also called pitch mastic. Also See coal-tar pitch. 9. In masonry, to square a stone with a chisel.

pitch

i. The rotation of an aircraft about its lateral axis.
ii. The distance a propeller will advance in one revolution if there is no slip. Also called a propeller pitch.
iii. The angular setting of a helicopter main or tail rotor blade relative to the axis of rotation and measured at a defined station.
iv. The rotation of a camera about the axis parallel to the vehicle's lateral axis. Also known as a tip.
v. The distance between the centers of adjacent rivets installed in the same row. The distance between rows of rivets is called a gauge.
vi. The distance moved forward in one revolution by a screw. Also known as the pitch of a screw.

pitch

¹1. Mountaineering a section of a route between two belay points, sometimes equal to the full length of the rope but often shorter 2. the degree of slope of a roof, esp when expressed as a ratio of height to span 3. the distance between corresponding points on adjacent members of a body of regular form, esp the distance between teeth on a gearwheel or between threads on a screw thread 4. the distance between regularly spaced objects such as rivets, bolts, etc. 5. a. the distance a propeller advances in one revolution, assuming no slip b. the blade angle of a propeller or rotor 6. Musica. the auditory property of a note that is conditioned by its frequency relative to other notes b. an absolute frequency assigned to a specific note, fixing the relative frequencies of all other notes. The fundamental frequencies of the notes A--G, in accordance with the frequency A = 440 hertz, were internationally standardized and accepted in 1939 7. Cricket the rectangular area between the stumps, 22 yards long and 10 feet wide; the wicket 8. Geology the inclination of the axis of an anticline or syncline or of a stratum or vein from the horizontal 9. another name for seven-up10. the act or manner of pitching a ball, as in cricket 11. Chiefly Brit a vendor's station, esp on a pavement 12. Golf an approach shot in which the ball is struck in a high arc

pitch

²1. any of various heavy dark viscid substances obtained as a residue from the distillation of tars 2. any of various similar substances, such as asphalt, occurring as natural deposits 3. any of various similar substances obtained by distilling certain organic substances so that they are incompletely carbonized 4. crude turpentine obtained as sap from pine trees

pitch

The number of printed characters per inch. With proportionally spaced characters, the pitch is variable and must be measured as an average. See dot pitch and pitch-yaw-roll.

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Synonyms for pitch

noun tar

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verb to send through the air with a motion of the hand or arm

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verb to raise upright

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verb to come to the ground suddenly and involuntarily

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verb to lean suddenly, unsteadily, and erratically from the vertical axis

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verb to move vigorously from side to side or up and down

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verb to slope downward

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verb to make known vigorously the positive features of (a product)

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phrase pitch into: to set upon with violent force

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noun an act of throwing

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noun a sudden involuntary drop to the ground

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noun a downward slope or distance

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noun exceptionally great concentration, power, or force, especially in activity

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noun a systematic effort or part of this effort to increase the importance or reputation of by favorable publicity

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Synonyms for pitch

noun the property of sound that varies with variation in the frequency of vibration

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noun (baseball) the act of throwing a baseball by a pitcher to a batter

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noun a vendor's position (especially on the sidewalk)

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