释义 |
WordReference Random House Learner's Dictionary of American English © 2024base1 /beɪs/USA pronunciation n., adj., v., based, bas•ing. n. [countable] - the part on which something stands:The base of the lamp was made of marble.
- a fundamental principle;
basis:data to be used as a base for further research. - the principal element in a mixture: A soup with a base of chicken broth.
- a starting point from which something is begun.
- Militarya place from which military operations proceed:an army base.
- Sport
- any of the four corners of a baseball diamond.
- a square canvas sack marking such a corner.
- the lower side of a figure, such as a triangle, in geometry;
the side to which an altitude can be drawn. - the number that serves as a starting point for certain mathematical operations.
- the number of symbols used in a numerical system.
- Chemistry
- a chemical compound that reacts with an acid to form a salt.
- Grammarthe part of a word to which certain prefixes, suffixes, or other markers may be added.
adj. [before a noun] - serving as or forming a base: the explorer's base camp.
v. - to make, form, or establish:[~ + object + on/upon + object]He based the book on his own life.
- to station or place at a base:[~ + object + at/on + object]an air squadron based on Guam.
Idioms- Idioms, Sport off base:
- Informal. seriously wrong:The president's advisers were off base when they predicted an easy victory.
- Idioms touch base, [no object] to get into contact;
communicate:Touch base with me before you leave. base, basis, and foundation all refer to anything upon which a structure is built and upon which it rests. base usually refers to a physical structure that supports something: the base of a statue. basis more often refers to a mental or figurative support: the basis of a report. foundation implies a strong, solid, secure structure underneath: the foundation of a skyscraper; the foundation of a theory. base2 /beɪs/USA pronunciation adj., bas•er, bas•est. - not honorable;
morally low:base motives of greed. - of little value;
worthless:base materials. base•ly, adv. base•ness, n. [uncountable] WordReference Random House Unabridged Dictionary of American English © 2024base1 (bās),USA pronunciation n., adj., v., based, bas•ing. n. - the bottom support of anything;
that on which a thing stands or rests:a metal base for the table. - a fundamental principle or groundwork;
foundation; basis:the base of needed reforms. - the bottom layer or coating, as of makeup or paint.
- Architecture
- the distinctively treated portion of a column or pier below the shaft or shafts. See diag. under column.
- the distinctively treated lowermost portion of any construction, as a monument, exterior wall, etc.
- Zoology[Bot., Zool.]
- Botanythe part of an organ nearest its point of attachment.
- Botanythe point of attachment.
- the principal element or ingredient of anything, considered as its fundamental part:face cream with a lanolin base; paint with a lead base.
- that from which a commencement, as of action or reckoning, is made;
a starting point or point of departure. - Sport[Baseball.]
- any of the four corners of the diamond, esp. first, second, or third base. Cf. home plate.
- a square canvas sack containing sawdust or some other light material, for marking first, second, or third base.
- Sporta starting line or point for runners, racing cars, etc.
- Sport(in hockey and other games) the goal.
- Military
- Militarya fortified or more or less protected area or place from which the operations of an army or an air force proceed.
- a supply installation for a large military force.
- Mathematics[Geom.]the line or surface forming the part of a figure that is most nearly horizontal or on which it is supposed to stand.
- Mathematics
- the number that serves as a starting point for a logarithmic or other numerical system.
- a collection of subsets of a topological space having the property that every open set in the given topology can be written as the union of sets of the collection.
- a collection of neighborhoods of a point such that every neighborhood of the point contains one from the collection.
- a collection of sets of a given filter such that every set in the filter is contained in some set in the collection.
- SurveyingAlso called base line. See under triangulation (def. 1).
- Fine Art[Painting.]
- vehicle (def. 10).
- Also called carrier. inert matter, used in the preparation of lakes, onto which a coloring compound is precipitated.
- Cinema, Photography[Photog.]a thin, flexible layer of cellulose triacetate or similar material that holds the light-sensitive film emulsion and other coatings, esp. on motion-picture film.
- Chemistry
- a compound that reacts with an acid to form a salt, as ammonia, calcium hydroxide, or certain nitrogen-containing organic compounds.
- the hydroxide of a metal or of an electropositive element or group.
- a group or molecule that takes up or accepts protons.
- a molecule or ion containing an atom with a free pair of electrons that can be donated to an acid;
an electron-pair donor. - any of the purine and pyrimidine compounds found in nucleic acids: the purines adenine and guanine and the pyrimidines cytosine, thymine, and uracil.
- Grammarthe part of a complex word, consisting of one or more morphemes, to which derivational or inflectional affixes may be added, as want in unwanted or biolog- in biological. Cf. root1 (def. 11), stem 1 (def. 16).
- Linguisticsthe component of a generative grammar containing the lexicon and phrase-structure rules that generate the deep structure of sentences.
- Electronics
- an electrode or terminal on a transistor other than the emitter or collector electrodes or terminals.
- the part of an incandescent lamp or electron tube that includes the terminals for making electrical connection to a circuit or power supply.
- Stock Exchangethe level at which a security ceases a decline in price.
- Heraldrythe lower part of an escutcheon.
- Heraldry bases, [Armor.]a tonlet formed of two shaped steel plates assembled side by side.
- Jewelrypavilion (def. 6).
- Idioms get to first base. See first base (def. 2).
- Heraldry in base, in the lower part of an escutcheon.
- off base:
- [Baseball.]not touching a base:The pitcher caught him off base and, after a quick throw, he was put out by the second baseman.
- [Informal.]badly mistaken:The police were way off base when they tried to accuse her of the theft.
- Sport on base, [Baseball.]having reached a base or bases:Two men are on base.
- Idioms touch base with, to make contact with:They've touched base with every political group on campus.
adj. - serving as or forming a base:The walls will need a base coat and two finishing coats.
v.t. - to make or form a base or foundation for.
- to establish, as a fact or conclusion (usually fol. by on or upon):He based his assumption of her guilt on the fact that she had no alibi.
- to place or establish on a base or basis;
ground; found (usually fol. by on or upon):Our plan is based on a rising economy. - to station, place, or situate (usually fol. by at or on):He is based at Fort Benning. The squadron is based on a carrier.
v.i. - to have a basis;
be based (usually fol. by on or upon):Fluctuating prices usually base on a fickle public's demand. - to have or maintain a base:I believe they had based on Greenland at one time.
- Latin basis basis; compare prisoner's base
- Middle French
- Middle English (noun, nominal) 1275–1325
- 1.See corresponding entry in Unabridged Base, basis, foundation refer to anything upon which a structure is built and upon which it rests. Base usually refers to a literal supporting structure:the base of a statue.Basis more often refers to a figurative support:the basis of a report.Foundation implies a solid, secure understructure:the foundation of a skyscraper or a rumor.
base2 (bās),USA pronunciation adj., bas•er, bas•est, n. adj. - morally low;
without estimable personal qualities; dishonorable; meanspirited; selfish; cowardly. - of little or no value;
worthless:hastily composed of base materials. - debased or counterfeit:an attempt to eliminate the base coinage.
- characteristic of or befitting an inferior person or thing.
- of illegitimate birth.
- not classical or refined:base language.
- Law[Old Eng. Law.]held by tenure less than freehold in return for a service viewed as somewhat demeaning to the tenant.
- [Archaic.]
- of humble origin or station.
- of small height.
- low in place, position, or degree:base servitude.
- [Obs.]deep or grave in sound;
bass:the base tones of a piano. n. - [Music. Obs.]bass1 (defs. 3, 4).
- Late Latin bassus low, short, perh. of Oscan origin, originally
- Old French
- Middle English bas 1350–1400
base′ly, adv. base′ness, n. - 1.See corresponding entry in Unabridged despicable, contemptible. See mean 2.
- 2.See corresponding entry in Unabridged poor, inferior, cheap, tawdry.
- 3.See corresponding entry in Unabridged fake, spurious.
- 4.See corresponding entry in Unabridged servile, ignoble, abject, slavish, menial.
Collins Concise English Dictionary © HarperCollins Publishers:: base /beɪs/ n - the bottom or supporting part of anything
- the fundamental or underlying principle or part, as of an idea, system, or organization; basis
- a centre of operations, organization, or supply
- (as modifier): base camp
- anything from which a process, as of measurement, action, or thought, is or may be begun; starting point: the new discovery became the base for further research
- the main ingredient of a mixture: to use rice as a base in cookery
- a chemical compound that combines with an acid to form a salt and water. A solution of a base in water turns litmus paper blue, produces hydroxyl ions, and has a pH greater than 7. Bases are metal oxides or hydroxides or amines
- any of the nitrogen-containing constituents of nucleic acids: adenine, thymine (in DNA), uracil (in RNA), guanine, or cytosine
- a medium such as oil or water in which the pigment is dispersed in paints, inks, etc; vehicle
- the part of an organ nearest to its point of attachment
- the point of attachment of an organ or part
- the bottommost layer or part of anything
- the lower part of a column or pier
- the lower side or face of a geometric construction
- the number of distinct single-digit numbers in a counting system, and so the number represented as 10 in a place-value system: the binary system has two digits, 0 and 1, and 10 to base two represents 2
- (of a logarithm or exponential) the number whose powers are expressed: since 1000 = 10³, the logarithm of 1000 to base 10 is 3
- the region in a transistor between the emitter and collector
- a starting or finishing point in any of various games
vb - (tr followed by on or upon) to use as a basis (for); found (on)
- often followed by at or in: to station, post, or place (a person or oneself)
Etymology: 14th Century: from Old French, from Latin basis pedestal; see basis base /beɪs/ adj - devoid of honour or morality; ignoble; contemptible
- of inferior quality or value
- debased; alloyed; counterfeit: base currency
- (of land tenure) held by villein or other ignoble service
- holding land by villein or other ignoble service
- archaic born of humble parents; plebeian
- archaic illegitimate
Etymology: 14th Century: from Old French bas, from Late Latin bassus of low height, perhaps from Greek bassōn deeperˈbaseness n |