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单词 trace
释义

trace


trace 1

T0298700 (trās)n.1. a. A visible mark, such as a footprint, made or left by the passage of a person, animal, or thing.b. Evidence or an indication of the former presence or existence of something; a vestige: left without a trace of having been there.2. a. An extremely small amount or barely perceivable indication: spoke with a trace of sarcasm.b. A constituent, such as a chemical compound or element, present in quantities less than a standard limit.3. A path or trail that has been beaten out by the passage of animals or people.4. An act of researching or ascertaining the origin or location of something: put a trace on the phone call; asked for a trace on a lost package.5. A line drawn by a recording instrument, such as a cardiograph.6. Mathematics a. The point at which a line, or the curve in which a surface, intersects a coordinate plane.b. The sum of the elements of the principal diagonal of a matrix.7. An engram.v. traced, trac·ing, trac·es v.tr.1. a. To go along or follow (a path, for example): We traced the trail up the mountain.b. To follow the course or trail of: trace a wounded deer.2. a. To ascertain the successive stages in the development or progress of: tracing the life cycle of an insect; trace the history of a family.b. To discover or determine by searching or researching evidence: trace the cause of a disease.c. To locate or ascertain the origin of: traced the money to a foreign bank account.3. a. To draw (a line or figure); sketch; delineate.b. To form (letters) with special concentration or care.4. a. To copy by following lines seen through a sheet of transparent paper.b. To follow closely (a prescribed pattern): The skater traced a figure eight.5. a. To imprint (a design) by pressure with an instrument on a superimposed pattern.b. To make a design or series of markings on (a surface) by such pressure on a pattern.6. To record (a variable), as on a graph.v.intr.1. To make one's way along a trail or course: We traced along the ridge.2. To have origins; be traceable: linguistic features that trace to West Africa.adj. Occurring in extremely small amounts or in quantities less than a standard limit.
[Middle English, track, from Old French, from tracier, to trace, from Vulgar Latin *tractiāre, from Latin tractus, a dragging, course, from past participle of trahere, to draw.]
trace′a·bil′i·ty n.trace′a·ble adj.trace′a·bly adv.

trace 2

T0298700 (trās)n.1. One of two side straps or chains connecting a harnessed draft animal to a vehicle or whiffletree.2. A bar or rod, hinged at either end to another part, that transfers movement from one part of a machine to another.Idiom: kick over the traces To act in a way that contravenes social expectations or propriety: "As soon as the opportunity presented itself, [he] kicked over the traces and threw himself into a life of pleasure" (K.D. Reynolds).
[Middle English trais, from Old French, pl. of trait, a hauling, harness strap, from Latin tractus, a hauling, from past participle of trahere, to haul.]

trace

(treɪs) n1. a mark or other sign that something has been in a place; vestige2. a tiny or scarcely detectable amount or characteristic3. a footprint or other indication of the passage of an animal or person4. (Mechanical Engineering) any line drawn by a recording instrument or a record consisting of a number of such lines5. something drawn, such as a tracing6. chiefly US a beaten track or path7. (Psychology) the postulated alteration in the cells of the nervous system that occurs as the result of any experience or learning. See also memory trace, engram8. (Mathematics) geometry the intersection of a surface with a coordinate plane9. (Mathematics) maths the sum of the diagonal entries of a square matrix10. (Linguistics) linguistics a symbol inserted in the constituent structure of a sentence to mark the position from which a constituent has been moved in a generative process11. (Physical Geography) meteorol an amount of precipitation that is too small to be measured12. archaic a way taken; routevb13. (tr) to follow, discover, or ascertain the course or development of (something): to trace the history of China. 14. (tr) to track down and find, as by following a trail15. to copy (a design, map, etc) by drawing over the lines visible through a superimposed sheet of transparent paper or other material16. a. to draw or delineate a plan or diagram of: she spent hours tracing the models one at a time. b. to outline or sketch (an idea, policy, etc): he traced out his scheme for the robbery. 17. (Art Terms) (tr) to decorate with tracery18. (Textiles) (tr) to imprint (a design) on cloth, etc19. (usually foll by back) to follow or be followed to source; date back: his ancestors trace back to the 16th century. 20. archaic to make one's way over, through, or along (something)[C13: from French tracier, from Vulgar Latin tractiāre (unattested) to drag, from Latin tractus, from trahere to drag] ˈtraceable adj ˌtraceaˈbility, ˈtraceableness n ˈtraceably adv ˈtraceless adj ˈtracelessly adv

trace

(treɪs) n1. (Horse Training, Riding & Manège) either of the two side straps that connect a horse's harness to the swingletree2. (Angling) angling a length of nylon or, formerly, gut attaching a hook or fly to a line3. kick over the traces to escape or defy control[C14 trais, from Old French trait, ultimately from Latin trahere to drag]

trace1

(treɪs)

n., v. traced, trac•ing, n. 1. a surviving mark, sign, or evidence of the former existence, influence, or action of some agent or event; vestige. 2. a barely discernible indication or evidence of some quantity, quality, characteristic, expression, etc. 3. an extremely small amount of some chemical component: a trace of copper in the ore. 4. traces, the series of footprints left by an animal. 5. the track left by the passage of a person, animal, or object. 6. precipitation of less than 0.005 in. (0.127 mm). 7. a trail or path, esp. through wild or open territory, made by the passage of people, animals, or vehicles. 8. a tracing, drawing, or sketch of something. 9. a lightly drawn line, as the record drawn by a self-registering instrument. 10. Math. a. the intersection of two planes, or of a plane and a surface. b. the sum of the elements along the principal diagonal of a square matrix. v.t. 11. to follow the footprints, track, or traces of. 12. to follow (footprints, evidence, the history or course of something, etc.). 13. to follow the course, development, or history of: to trace a political movement. 14. to ascertain by investigation; discover. 15. to draw (a line, outline, figure, etc.). 16. to make a plan, diagram, or map of. 17. to copy (a drawing, plan, etc.) by following the lines of the original on a superimposed transparent sheet. 18. to make an impression or imprinting of (a design, pattern, etc.). v.i. 19. to go back in history, ancestry, or origin. 20. to follow a course, trail, etc. [1250–1300; Middle English: to make one's way, proceed < Middle French tracier < Vulgar Latin *tractiāre, derivative of Latin tractus, past participle of trahere to draw, drag] trace′a•ble, adj.

trace2

(treɪs)

n. either of the two straps, ropes, or chains by which a carriage, wagon, or the like is drawn by a harnessed horse or other draft animal. Idioms: kick over the traces, to throw off restraint; become independent or defiant. [1300–50; Middle English trais < Middle French, pl. of trait strap for harness < Latin tractus dragging]

Trace

 of hares: hares collectively; a line or train of people, 1385.

trace


Past participle: traced
Gerund: tracing
Imperative
trace
trace
Present
I trace
you trace
he/she/it traces
we trace
you trace
they trace
Preterite
I traced
you traced
he/she/it traced
we traced
you traced
they traced
Present Continuous
I am tracing
you are tracing
he/she/it is tracing
we are tracing
you are tracing
they are tracing
Present Perfect
I have traced
you have traced
he/she/it has traced
we have traced
you have traced
they have traced
Past Continuous
I was tracing
you were tracing
he/she/it was tracing
we were tracing
you were tracing
they were tracing
Past Perfect
I had traced
you had traced
he/she/it had traced
we had traced
you had traced
they had traced
Future
I will trace
you will trace
he/she/it will trace
we will trace
you will trace
they will trace
Future Perfect
I will have traced
you will have traced
he/she/it will have traced
we will have traced
you will have traced
they will have traced
Future Continuous
I will be tracing
you will be tracing
he/she/it will be tracing
we will be tracing
you will be tracing
they will be tracing
Present Perfect Continuous
I have been tracing
you have been tracing
he/she/it has been tracing
we have been tracing
you have been tracing
they have been tracing
Future Perfect Continuous
I will have been tracing
you will have been tracing
he/she/it will have been tracing
we will have been tracing
you will have been tracing
they will have been tracing
Past Perfect Continuous
I had been tracing
you had been tracing
he/she/it had been tracing
we had been tracing
you had been tracing
they had been tracing
Conditional
I would trace
you would trace
he/she/it would trace
we would trace
you would trace
they would trace
Past Conditional
I would have traced
you would have traced
he/she/it would have traced
we would have traced
you would have traced
they would have traced
Thesaurus
Noun1.trace - a just detectable amounttrace - a just detectable amount; "he speaks French with a trace of an accent"suggestion, hintsmall indefinite amount, small indefinite quantity - an indefinite quantity that is below average size or magnitudespark - a small but noticeable trace of some quality that might become stronger; "a spark of interest"; "a spark of decency"
2.trace - an indication that something has been presenttrace - an indication that something has been present; "there wasn't a trace of evidence for the claim"; "a tincture of condescension"vestige, tincture, shadowfootprint - a trace suggesting that something was once present or felt or otherwise important; "the footprints of an earlier civilization"indicant, indication - something that serves to indicate or suggest; "an indication of foul play"; "indications of strain"; "symptoms are the prime indicants of disease"
3.trace - a suggestion of some qualitytrace - a suggestion of some quality; "there was a touch of sarcasm in his tone"; "he detected a ghost of a smile on her face"touch, ghostproffer, proposition, suggestion - a proposal offered for acceptance or rejection; "it was a suggestion we couldn't refuse"
4.trace - a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original imagetrace - a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original imagetracingdrawing - a representation of forms or objects on a surface by means of lines; "drawings of abstract forms"; "he did complicated pen-and-ink drawings like medieval miniatures"
5.trace - either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletreetrace - either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletreeharness - stable gear consisting of an arrangement of leather straps fitted to a draft animal so that it can be attached to and pull a cartline - something (as a cord or rope) that is long and thin and flexible; "a washing line"
6.trace - a visible mark (as a footprint) left by the passage of person or animal or vehicletrace - a visible mark (as a footprint) left by the passage of person or animal or vehicleprint, mark - a visible indication made on a surface; "some previous reader had covered the pages with dozens of marks"; "paw prints were everywhere"
Verb1.trace - follow, discover, or ascertain the course of development of somethingtrace - follow, discover, or ascertain the course of development of something; "We must follow closely the economic development is Cuba" ; "trace the student's progress"followkeep abreast, keep up, follow - keep informed; "He kept up on his country's foreign policies"analyse, analyze, examine, study, canvass, canvas - consider in detail and subject to an analysis in order to discover essential features or meaning; "analyze a sonnet by Shakespeare"; "analyze the evidence in a criminal trial"; "analyze your real motives"keep an eye on, watch over, watch, observe, follow - follow with the eyes or the mind; "Keep an eye on the baby, please!"; "The world is watching Sarajevo"; "She followed the men with the binoculars"
2.trace - make a mark or lines on a surfacetrace - make a mark or lines on a surface; "draw a line"; "trace the outline of a figure in the sand"describe, draw, line, delineatemark - make or leave a mark on; "the scouts marked the trail"; "ash marked the believers' foreheads"construct - draw with suitable instruments and under specified conditions; "construct an equilateral triangle"inscribe - draw within a figure so as to touch in as many places as possiblecircumscribe - draw a line around; "He drew a circle around the points"circumscribe - to draw a geometric figure around another figure so that the two are in contact but do not intersectdraw - engage in drawing; "He spent the day drawing in the garden"draw - represent by making a drawing of, as with a pencil, chalk, etc. on a surface; "She drew an elephant"; "Draw me a horse"write - mark or trace on a surface; "The artist wrote Chinese characters on a big piece of white paper"; "Russian is written with the Cyrillic alphabet"
3.trace - to go back over againtrace - to go back over again; "we retraced the route we took last summer"; "trace your path"retracereturn - go or come back to place, condition, or activity where one has been before; "return to your native land"; "the professor returned to his teaching position after serving as Dean"
4.trace - pursue or chase relentlesslytrace - pursue or chase relentlessly; "The hunters traced the deer into the woods"; "the detectives hounded the suspect until they found him"hound, huntdog, give chase, go after, chase, tail, chase after, trail, track, tag - go after with the intent to catch; "The policeman chased the mugger down the alley"; "the dog chased the rabbit"ferret - hound or harry relentlessly
5.trace - discover traces oftrace - discover traces of; "She traced the circumstances of her birth"detect, discover, notice, observe, find - discover or determine the existence, presence, or fact of; "She detected high levels of lead in her drinking water"; "We found traces of lead in the paint"
6.trace - make one's course or travel along a path; travel or pass over, around, or along; "The children traced along the edge of the dark forest"; "The women traced the pasture"go forward, proceed, continue - move ahead; travel onward in time or space; "We proceeded towards Washington"; "She continued in the direction of the hills"; "We are moving ahead in time now"
7.trace - copy by following the lines of the original drawing on a transparent sheet placed upon ittrace - copy by following the lines of the original drawing on a transparent sheet placed upon it; make a tracing of; "trace a design"; "trace a pattern"re-create, copy - make a replica of; "copy that drawing"; "re-create a picture by Rembrandt"
8.trace - read with difficultytrace - read with difficulty; "Can you decipher this letter?"; "The archeologist traced the hieroglyphs"decipherread - interpret something that is written or printed; "read the advertisement"; "Have you read Salman Rushdie?"

trace

verb1. search for, follow, seek out, track, determine, pursue, unearth, ascertain, hunt down I first went there to trace my roots.2. find, track (down), discover, trail, detect, unearth, hunt down, ferret out, locate Police are anxious to trace a man seen leaving the house.3. outline, chart, sketch, draw, map out, depict, mark out, delineate I traced the course of the river on the map.4. copy, map, draft, outline, sketch, reproduce, draw over She learnt to draw by tracing pictures from story books.noun1. bit, drop, touch, shadow, suggestion, hint, dash, suspicion, tinge, trifle, whiff, jot, tincture, iota Wash them in cold water to remove all traces of sand.2. remnant, remains, sign, record, mark, evidence, indication, token, relic, vestige The church has traces of fifteenth-century frescoes.3. track, trail, footstep, path, slot, footprint, spoor, footmark He disappeared mysteriously without a trace.

trace

noun1. A visible sign or mark of the passage of someone or something:print, track, trail.2. A mark or remnant that indicates the former presence of something:relic, remains, vestige.3. A slight amount or indication:breath, dash, ghost, hair, hint, intimation, semblance, shade, shadow, soupçon, streak, suggestion, suspicion, taste, tinge, touch, whiff, whisper.Informal: whisker.verb1. To follow the traces or scent of, as in hunting:track, trail.2. To pursue and locate:hunt down, nose out, run down, track down.Idiom: run to earth.
Translations
痕迹跟踪踪迹微量探查

trace

(treis) noun1. a mark or sign left by something. There were traces of egg on the plate; There's still no trace of the missing child. 痕跡,遺跡 痕迹,踪迹 2. a small amount. Traces of poison were found in the cup. 微量 微量 verb1. to follow or discover by means of clues, evidence etc. The police have traced him to London; The source of the infection has not yet been traced. 跟蹤,探查 跟踪,探查 2. to make a copy of (a picture etc) by putting transparent paper over it and drawing the outline etc. I traced the map. 描摹 描摹ˈtracing noun a copy made by tracing. I made a tracing of the diagram. 摹圖 摹图trace elements elements that are needed in small quantities for the growing and developing of animal and plant life. 微量元素 微量元素ˈtracing-paper noun thin transparent paper used for tracing. 描圖紙 描图纸

trace

痕迹zhCN

trace


with no trace

With no evidence left behind. Our house was totally ransacked after the break-in, with no trace of how the robbers got into the house. I'm allowed to use my mom's expensive blender, just as long as I do so with no trace of ever having touched it.See also: no, trace

sink without (a) trace

1. To quickly and thoroughly fail. The new smartphone was meant to revolutionize the industry, but it sank without trace after its commercial release. After his initial breakout success, the director's follow-up film sank without a trace.2. To be forgotten about by the population as a whole, especially after being very popular. The digital pets fad took the world by storm in the late 1990s, but sank without trace by the end of the millennium.See also: sink, trace, without

kick over the traces

To ignore rules and/or tradition; to rebel or break free. Refers to a horse that has stepped over the straps harnessing it to what it is pulling, therefore allowing it move more freely. Many people desire to kick over the traces in youth, and then begin to cherish the very traditions they flouted earlier in their life.See also: kick, over, trace

disappear without (a) trace

1. To disappear without any indication to one's or something's whereabouts. Police have been searching for two weeks to find a young girl who disappeared without trace from her home in Rochester. Authorities are puzzled by the navy submarine that seemingly disappeared without a trace last Thursday.2. To be forgotten about by the population as a whole, especially after being very popular. The digital pets fad took the world by storm in the late 1990s, but disappeared without a trace after a few years.See also: disappear, trace, without

vanish without (a) trace

1. To disappear without any indication to one's or something's whereabouts. Police have been searching for two weeks to find a young girl who vanished without trace from her home in Rochester. Authorities are puzzled by the navy submarine that seemingly vanished without a trace last Thursday.2. To be forgotten about by the population as a whole, especially after being very popular. The digital pets fad took the world by storm in the late 1990s, but pretty much vanished without a trace by the end of the millennium.See also: trace, vanish, without

trace back

1. To derive or originate from someone, something, or some place. The powerful corporation traces back nearly 200 years to a small manufacturing company in New York City. Investigators discovered that the drug money traced back to a US senator.2. To discover the point of origin of someone or something by following a trail of information or series of events backward. In this usage, a noun or pronoun can be used between "trace" and "back." We were able to trace the assassination attempt back to a cartel in Mexico. Make sure you only pay in cash, as the police can trace back exactly where and when you use your card.See also: back, trace

trace out

1. To trace, sketch, or delineate the outline of something. A noun or pronoun can be used between "trace" and "out." He traced out the directions to the cabin on the back of a napkin for me. I'm having a hard time visualizing what you mean. Why don't you trace it out on the whiteboard for us?2. To develop, determine, or delineate something, such as a pattern or course of events, gradually over a period of time. A noun or pronoun can be used between "trace" and "out." The investigation traced out a pattern of corruption and abuse of power going all the way to the top of the administration. The film portrays the legendary actor's rise to fame, tracing it out from his humble beginnings toSee also: out, trace

lose trace of (someone or something)

1. To lose visibility of, forget about, misplace, or neglect to pay close attention to someone or something. I'm sorry I'm late—we were having so much fun that I completely lost trace of time. I was watching the bird through my binoculars until I lost trace of it in the canopy. The police lost trace of the criminal somewhere in the swamp.2. To unintentionally decrease frequency of communication with someone over time until no further contact takes place. Unfortunately, I lost trace of my college roommate, so I have no idea how she's doing now. Yeah, I lost trace of Mark after he moved to Thailand.See also: lose, of, trace

not a trace (of something)

Not even the smallest amount (of something). The group of financial analysts said there is not a trace of hope that the economy will improve at any point this year. The team needed to come out with intensity if they wanted to stand a chance, but unfortunately they showed not a trace during that dreadful display. There wasn't a trace of remorse in his voice as he pleaded guilty to the horrible crimes.See also: not, trace

kick over the traces

Fig. to do what one is meant not to do; to rebel against authority. (Alludes to a horse that steps on the wrong side of the straps that link it to whatever it is pulling.) At the age of sixty, Walter kicked over the traces and ran away to Brazil. All these young kids seem to want to kick over the traces.See also: kick, over, trace

lose trace of someone or something

Rur. to fail to maintain a way of finding someone or something. I lost trace of Walter after we left high school. I lost trace of the stock certificates after about twenty years.See also: lose, of, trace

trace around something

to press something against paper and draw a line around the edges that are in contact with the paper. Trace around this piece of material and cut out a new pattern. If you trace around the edges carefully, you will end up with a good drawing of the outline.See also: around, trace

trace over something

 1. to draw over something lightly. Trace over the drawing to make it a little darker. I had to trace over it twice to make it visible. 2. to copy something by placing a thin sheet of paper over it and drawing an outline of the thing to be copied. Trace over this picture and then photocopy about ten copies for us all. This needs to be traced over again.See also: over, trace

trace someone or something (back) (to someone or something)

to trail or track the origin of someone or something back to someone or something. We traced her back to the car she had ridden in, but lost her trail at that point. We traced the letter back to her. See if you can trace back the check to its writer.

kick over the traces

Break loose from restraint, misbehave. For example, There's always one child who'll kick over the traces as soon as the bell rings. This metaphoric expression alludes to the straps attaching a horse to a vehicle, which the animal sometimes gets a leg over in order to kick more freely and thereby refuse to move forward. [Mid-1800s] See also: kick, over, trace

kick over the traces

If someone kicks over the traces, they pay no attention to rules and traditions and behave exactly as they want to. Harry had kicked over the traces when his father died, and quit going to church. He found that most of his students had the desire to kick over the traces, the refusal to accept old values without question. Note: When a horse pulling a cart or carriage kicks over the traces, it steps over the side straps attached to its harness, so it can no longer be controlled effectively by the driver. See also: kick, over, trace

kick over the traces

become insubordinate or reckless. Traces are the straps by which a draught horse is attached to the vehicle it is pulling. If the animal kicked out over these straps, the driver would no longer be able to control it.See also: kick, over, trace

sink without trace

1 disappear and not be seen or heard of again. 2 fail abjectly. 2 2003 Down Democrat Recently Paul Linehan's team sank without trace in the NCU Senior Cup, crushed by Division Two visitors Carrickfergus. See also: sink, trace, without

ˌkick over the ˈtraces

(old-fashioned, British English) start to behave badly and refuse to accept any discipline or control: She smokes and she drinks. She’s really kicking over the traces, and her parents don’t know what to do with her.This phrase refers to a horse that has managed to lift its leg(s) over the long thin strips of leather (the traces) that attach it to a carriage or wagon so that it can kick more easily. The driver then cannot control it.See also: kick, over, trace

sink, vanish, etc. without (a) ˈtrace

disappear completely: The boat sank without trace.Many pop stars sink without a trace. After five years no one can even remember their names.See also: trace, without

trace back

v.1. To ascertain the successive stages in the development or progress of something by reasoning backward from an effect to a cause: We traced our family history back 200 years. Skepticism as a philosophical movement can be traced back to Sextus Empiricus. 2. To derive from something or someone: The counterfeit drugs traced back to an American expatriate. Many English words trace back to Greek or Latin.See also: back, trace

trace out

v.1. To sketch or delineate something: I laid out the map and traced out the path to the park.2. To delineate some pattern or development over time: The results traced out an interesting pattern of sudden fluctuations every three months. The biographer traced out the politician's rise to power.3. To ascertain something by reconstructing a series of events: The police traced out the Internet cafe as the place where the virus was launched. The motive for the crime was so unusual that no one could trace it out. See also: out, trace

kick over the traces

To act in a way that contravenes social expectations or propriety: "As soon as the opportunity presented itself, [he] kicked over the traces and threw himself into a life of pleasure" (K.D. Reynolds).See also: kick, over, trace

kick over the traces, to

To break loose, away from control. The traces referred to are a pair of ropes or straps attaching a harnessed horse to a wagon or other vehicle. A horse can kick over these attachments when refusing to run or pull the vehicle. The term was transferred to anyone breaking free from restraint in the latter half of the nineteenth century. It appeared in Henry Kingsley’s Ravenshoe (1861): “I’ll go about with the rogue. He is inclined to kick over the traces.”See also: kick, over

kick over the traces

To disregard what is expected and follow your own wishes. Traces are the leather harness straps by which a horse is attached to a wagon or another vehicle. When the animal becomes upset, it may well kick out and end up stepping over the traces. At that point the driver has little or no control in steering or stopping. A person who rebels against convention and acts in what society would consider an unseemly manner has kicked over the traces. A similar equine-derived expression is “spit the bit and chuck the harness.”See also: kick, over, trace

trace


trace

11. any line drawn by a recording instrument or a record consisting of a number of such lines 2. the postulated alteration in the cells of the nervous system that occurs as the result of any experience or learning 3. Geometry the intersection of a surface with a coordinate plane 4. Maths the sum of the diagonal entries of a square matrix 5. Meteorol an amount of precipitation that is too small to be measured

trace

21. either of the two side straps that connect a horse's harness to the swingletree 2. Angling a length of nylon or, formerly, gut attaching a hook or fly to a line

Trace

 

The trace of a matrix is the sum of the matrix’s diagonal elements. This concept is defined only for a square matrix A Trace. The trace of A is denoted by Tr A or Sp A. The latter symbol is derived from the German word Spur, which is sometimes used to refer to a trace. It follows that

Tr A = a11 + a22 + … + ann

If the characteristic equation of A has the roots (called eigenvalues or characteristic roots) λ1, λ2,…,λn, then

Tr A = λ1 + λ2 + …. + λn

trace

[trās] (computer science) To provide a record of every step, or selected steps, executed by a computer program, and by extension, the record produced by this operation. (electronics) The visible path of a moving spot on the screen of a cathode-ray tube. Also known as line. (engineering) The record made by a recording device, such as a seismometer or electrocardiograph. (geology) The intersection of two geological surfaces. (mathematics) The trace of a matrix is the sum of the entries along its principal diagonal. Designated Tr. Also known as spur. The trace of a linear transformation on a finite-dimensional vector space is the trace (in the sense of the first definition) of the matrix associated with it. One of the curves along which a given surface cuts a coordinate plane. A point at which a given straight line in space passes through a coordinate plane. Also known as piercing point. The projection of a given straight line in space on a coordinate plane. (meteorology) A precipitation of less than 0.005 inch (0.127 millimeter). (science and technology) An extremely small but detectable quantity of a substance.

trace

traceThe line appearing on the face of a cathoderay tube when the visible dot repeatedly sweeps across the face of the tube as a result of deflections of the electrons. The path of the dot from the end of one sweep to the start of the next sweep is called a retrace. If more than one trace is shown on the same scope, the traces may be called an A-trace, B-trace, etc.

trace


trace

(trās), 1. Evidence of the former existence, influence, or action of an object, phenomenon, or event. 2. An extremely small amount or barely discernible indication of something.

TRACE

Cardiology A clinical trial–Trandolapril Cardiac Evaluation that evaluated the effect of an ACE inhibitor on the M&M of Pts with acute MI. See Acute myocardial infarction, Trandolapril Molecular medicine Trial of Genetic Assessment in Breast Cancer.

trace

(tras) [O.Fr. tracier] 1. A very small quantity.2. A visible mark or sign.

primitive trace

Synonym: primitive streak

trace

(trās) 1. Evidence of former existence, influence, or action of an object, phenomenon, or event. 2. Extremely small amount or barely discernible indication of something.
LegalSeeTracing

TRACE


AcronymDefinition
TRACETransition Region and Coronal Explorer
TRACETrade Reporting and Compliance Engine
TRACETracking and Communications (extraterrestrial)
TRACETeaching Resources and Continuing Education
TRACETransport and Atmospheric Chemistry Near the Equator
TRACEThreat Research And Content Engineering (Marshal Ltd)
TRACETransitional Region and Coronal Explorer
TRACETarget Responsibility for Alcohol Connected Emergencies
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trace


Related to trace: Traceroute, Trace route
  • all
  • verb
  • noun

Synonyms for trace

verb search for

Synonyms

  • search for
  • follow
  • seek out
  • track
  • determine
  • pursue
  • unearth
  • ascertain
  • hunt down

verb find

Synonyms

  • find
  • track (down)
  • discover
  • trail
  • detect
  • unearth
  • hunt down
  • ferret out
  • locate

verb outline

Synonyms

  • outline
  • chart
  • sketch
  • draw
  • map out
  • depict
  • mark out
  • delineate

verb copy

Synonyms

  • copy
  • map
  • draft
  • outline
  • sketch
  • reproduce
  • draw over

noun bit

Synonyms

  • bit
  • drop
  • touch
  • shadow
  • suggestion
  • hint
  • dash
  • suspicion
  • tinge
  • trifle
  • whiff
  • jot
  • tincture
  • iota

noun remnant

Synonyms

  • remnant
  • remains
  • sign
  • record
  • mark
  • evidence
  • indication
  • token
  • relic
  • vestige

noun track

Synonyms

  • track
  • trail
  • footstep
  • path
  • slot
  • footprint
  • spoor
  • footmark

Synonyms for trace

noun a visible sign or mark of the passage of someone or something

Synonyms

  • print
  • track
  • trail

noun a mark or remnant that indicates the former presence of something

Synonyms

  • relic
  • remains
  • vestige

noun a slight amount or indication

Synonyms

  • breath
  • dash
  • ghost
  • hair
  • hint
  • intimation
  • semblance
  • shade
  • shadow
  • soupçon
  • streak
  • suggestion
  • suspicion
  • taste
  • tinge
  • touch
  • whiff
  • whisper
  • whisker

verb to follow the traces or scent of, as in hunting

Synonyms

  • track
  • trail

verb to pursue and locate

Synonyms

  • hunt down
  • nose out
  • run down
  • track down

Synonyms for trace

noun a just detectable amount

Synonyms

  • suggestion
  • hint

Related Words

  • small indefinite amount
  • small indefinite quantity
  • spark

noun an indication that something has been present

Synonyms

  • vestige
  • tincture
  • shadow

Related Words

  • footprint
  • indicant
  • indication

noun a suggestion of some quality

Synonyms

  • touch
  • ghost

Related Words

  • proffer
  • proposition
  • suggestion

noun a drawing created by superimposing a semitransparent sheet of paper on the original image and copying on it the lines of the original image

Synonyms

  • tracing

Related Words

  • drawing

noun either of two lines that connect a horse's harness to a wagon or other vehicle or to a whiffletree

Related Words

  • harness
  • line

noun a visible mark (as a footprint) left by the passage of person or animal or vehicle

Related Words

  • print
  • mark

verb follow, discover, or ascertain the course of development of something

Synonyms

  • follow

Related Words

  • keep abreast
  • keep up
  • follow
  • analyse
  • analyze
  • examine
  • study
  • canvass
  • canvas
  • keep an eye on
  • watch over
  • watch
  • observe

verb make a mark or lines on a surface

Synonyms

  • describe
  • draw
  • line
  • delineate

Related Words

  • mark
  • construct
  • inscribe
  • circumscribe
  • draw
  • write

verb to go back over again

Synonyms

  • retrace

Related Words

  • return

verb pursue or chase relentlessly

Synonyms

  • hound
  • hunt

Related Words

  • dog
  • give chase
  • go after
  • chase
  • tail
  • chase after
  • trail
  • track
  • tag
  • ferret

verb discover traces of

Related Words

  • detect
  • discover
  • notice
  • observe
  • find

verb make one's course or travel along a path

Related Words

  • go forward
  • proceed
  • continue

verb copy by following the lines of the original drawing on a transparent sheet placed upon it

Related Words

  • re-create
  • copy

verb read with difficulty

Synonyms

  • decipher

Related Words

  • read
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更新时间:2024/12/23 18:16:41