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单词 length
释义

length


length

L0117600 (lĕngkth, lĕngth, lĕnth)n.1. The state, quality, or fact of being long. See Usage Note at strength.2. The measurement of the extent of something along its greatest dimension: the length of the boat.3. A piece, often of a standard size, that is normally measured along its greatest dimension: a length of cloth.4. A measure used as a unit to estimate distances: won the race by a length.5. Extent or distance from beginning to end: the length of a novel; the length of a journey.6. The amount of time between specified moments; the duration: the length of a meeting.7. often lengths Extent or degree to which an action or policy is carried: went to great lengths to prove his point.8. Linguistics a. The duration of a vowel.b. The duration of a syllable.9. The vertical extent of a garment. Often used in combination: knee-length; floor-length.Idiom: at length1. After some time; eventually: At length we arrived at our destination.2. For a considerable time; fully: spoke at length about the court ruling.
[Middle English, from Old English lengthu; see del- in Indo-European roots.]

length

(lɛŋkθ; lɛŋθ) n1. the linear extent or measurement of something from end to end, usually being the longest dimension or, for something fixed, the longest horizontal dimension2. the extent of something from beginning to end, measured in some more or less regular units or intervals: the book was 600 pages in length. 3. a specified distance, esp between two positions or locations: the length of a race. 4. a period of time, as between specified limits or moments5. something of a specified, average, or known size or extent measured in one dimension, often used as a unit of measurement: a length of cloth. 6. a piece or section of something narrow and long: a length of tubing. 7. the quality, state, or fact of being long rather than short8. (usually plural) the amount of trouble taken in pursuing or achieving something (esp in the phrase to great lengths)9. (often plural) the extreme or limit of action (in phrases such as to any length(s), to what length(s) would someone go, etc)10. (Poetry) prosody phonetics the metrical quantity or temporal duration of a vowel or syllable11. (Swimming, Water Sports & Surfing) the distance from one end of a rectangular swimming bath to the other. Compare width412. (Poetry) prosody the quality of a vowel, whether stressed or unstressed, that distinguishes it from another vowel of similar articulatory characteristics. Thus (iː) in English beat is of greater length than (ɪ) in English bit13. (Cricket) cricket the distance from the batsman at which the ball pitches14. (Bridge) bridge a holding of four or more cards in a suit15. informal NZ the general idea; the main purpose16. at length a. in depth; fullyb. eventuallyc. for a long time; interminably[Old English lengthu; related to Middle Dutch lengede, Old Norse lengd]

length

(lɛŋkθ, lɛŋθ, lɛnθ)

n. 1. the longest extent of anything as measured from end to end: the length of a river. 2. the measure of the greatest dimension of a plane or solid figure. 3. extent from beginning to end of a series, enumeration, account, book, etc.: a report 300 pages in length. 4. extent in time; duration: the length of a visit. 5. a distance determined by the extent of something specified: Hold the picture at arm's length. 6. a piece or portion of a certain or a known extent: a length of rope. 7. the quality or state of being long rather than short: a journey remarkable for its length. 8. Usu., lengths. the extent to which a desired end is pursued: to go to great lengths to get what one wants. 9. a large extent or expanse of something. 10. the measure from end to end of a horse, boat, etc., as a unit of distance in racing: The horse won by two lengths. 11. the extent of a garment related to a point it reaches on the wearer's body or on a garment used as a standard of measurement (usu. used in combination): an ankle-length gown; a three-quarter-length coat. 12. the relative duration of time involved in pronouncing a sound, esp. a vowel, or syllable; quantity. Idioms: 1. at length, a. after a considerable time; finally. b. fully; in detail. 2. go to any length(s), to do anything required to accomplish one's purpose. [before 900; Middle English length(e), Old English lengthu, c. Dutch lengte, Old Norse lengd. See long1, -th1]
Thesaurus
Noun1.length - the linear extent in space from one end to the otherlength - the linear extent in space from one end to the other; the longest dimension of something that is fixed in place; "the length of the table was 5 feet"physical property - any property used to characterize matter and energy and their interactionsdimension - the magnitude of something in a particular direction (especially length or width or height)circumference - the length of the closed curve of a circlediam, diameter - the length of a straight line passing through the center of a circle and connecting two points on the circumferenceradius, r - the length of a line segment between the center and circumference of a circle or spherelongness - the property of being of long spatial extent; "one gene causes shortness and the other causes longness"shortness - the property of being of short spatial extent; "the shortness of the Channel crossing"fundamental measure, fundamental quantity - one of the four quantities that are the basis of systems of measurement
2.length - continuance in time; "the ceremony was of short duration"; "he complained about the length of time required"durationtemporal property - a property relating to timelongness - duration as an extensionprotraction, lengthiness, prolongation, continuation - the consequence of being lengthened in durationendlessness - the property of being (or seeming to be) without endshortness - the property of being of short temporal extent; "the shortness of air travel time"brevity, briefness, transience - the attribute of being brief or fleetingpermanence, permanency - the property of being able to exist for an indefinite durationimpermanence, impermanency - the property of not existing for indefinitely long durations
3.length - the property of being the extent of something from beginning to end; "the editor limited the length of my article to 500 words"extent - the distance or area or volume over which something extends; "the vast extent of the desert"; "an orchard of considerable extent"
4.length - size of the gap between two places; "the distance from New York to Chicago"; "he determined the length of the shortest line segment joining the two points"distanceleg - (nautical) the distance traveled by a sailing vessel on a single tacksize - the physical magnitude of something (how big it is); "a wolf is about the size of a large dog"arm's length - a distance sufficient to exclude intimacygauge - the distance between the rails of a railway or between the wheels of a trainlight time - distance measured in terms of the speed of light (or radio waves); "the light time from Jupiter to the sun is approximately 43 minutes"skip distance - the shortest distance that permits radio signals (of a given frequency) to travel from the transmitter to the receiver by reflection from the ionospherewingspan, wingspread - linear distance between the extremities of an airfoilwingspread - distance between the tips of the wings (as of a bird or insect) when fully extendedaltitude - the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)
5.length - a section of something that is long and narrow; "a length of timber"; "a length of tubing"segment, section - one of several parts or pieces that fit with others to constitute a whole object; "a section of a fishing rod"; "metal sections were used below ground"; "finished the final segment of the road"

length

noun1. distance, reach, measure, extent, span, longitude It is about a metre in length.2. duration, term, period, space, stretch, span, expanse His film is over two hours in length.3. piece, measure, section, segment, portion a 30ft length of rope4. lengthiness, extent, elongation, wordiness, verbosity, prolixity, long-windedness, extensiveness, protractedness I hope the length of this letter will make up for my not having written earlier.at length5. at last, finally, eventually, in time, in the end, at long last At length, my father went into the house.6. for a long time, completely, fully, thoroughly, for hours, in detail, for ages, in depth, to the full, exhaustively, interminably They spoke at length, reviewing the entire incident.

length

noun1. The measure of how far or long something goes in space, time, or degree:extent, reach, span, stretch.2. An extent, measured or unmeasured, of linear space:distance, space, stretch.Informal: piece, way.3. The ultimate point to which an action, thought, discussion, or policy is carried:end, extreme, limit.
Translations
长度马或船的自身长度一段身长距离

length

(leŋθ) noun1. the distance from one end to the other of an object, period of time etc. What is the length of your car?; Please note down the length of time it takes you to do this. 長度 长度2. a piece of something, especially cloth. I bought a (3–metre) length of silk. 某物的一段(尤指布匹) (某物的)一段 3. in racing, the measurement from end to end of a horse, boat etc. He won by a length; The other boat is several lengths in front. (表示比賽中的差距)一馬長的距離,(表示比賽中的差距)一艇長的距離 身长距离,(马或船的)自身长度 ˈlengthen verb to make or become longer. I'll have to lengthen this skirt; The days are lengthening now that the spring has come. 加長,延長 加长,使延长 ˈlengthways/ˈlengthwise adverb in the direction of the length. She folded the towels lengthways. 縱向地 纵长地,纵向地 ˈlengthy adjective of great, often too great, length. This essay is interesting but lengthy. 冗長的 漫长的,过长的 at length1. in detail; taking a long time. She told us at length about her accident. 詳盡地,長時間 详细地2. at last. At length the walkers arrived home. 最後 最后go to any lengths to do anything, no matter how extreme, dishonest, wicked etc, to achieve a particular aim. She'd go to any lengths to get herself promoted. 千方百計﹐不擇手段 竭尽全力

length

长度zhCN
  • This length, please → 要这么长

length


at arm's length

At or occupying a distance, either physical or figurative, away from oneself that affords a level of safety or security or that excludes intimacy. I'm involved in all the board meetings, but I prefer to stay at arm's length if the issues become too contentious. John always keeps his friends at arm's length, so that no one gets close enough to hurt his feelings.See also: length

arm's length

A distance intentionally kept from something or between something, equal (literally or figuratively) to an arm's span. Typically used in the phrase "keep at an arm's length." Nancy has been keeping me at an arm's length ever since she found out I was gossiping about her. You're filthy from that game, please stay an arm's length away from me! You can watch me cook, but stay at arm's length in case any hot oil spurts out of the pan.See also: length

give (someone) the length of (one's) tongue

To voice one's opinion, often in an aggressive or abusive way. I thought Paul was unhappy, but I did not expect him to lash out and give me the length of his tongue like that. I can't stand being around my mom when she starts giving us the length of her tongue.See also: give, length, of, tongue

go to any length(s)

To do anything necessary to accomplish or attain something. I will go to any length to get an A in this class, professor—I'll clean your office, wash your car, anything! Go to any lengths you need to, just get me a reservation for this Saturday night!See also: any, go

short of a length

In cricket, a short delivery from the bowler to the batsman. Quit pitching the ball short of a length—that's how they're getting so many hits!See also: length, of, short

at great length

For a long duration. When I came home after curfew, my mom interrogated me at great length. He spoke at great length about how he had been inspired by his trip.See also: great, length

at length

1. In great detail. I studied American modernism in college, so I can speak about Eliot's poetry at length.2. For a long period of time. My father always lectures me at length about the dangers of living in the city.3. Finally. At length, the sermon ended.See also: length

hold (one) at arm's length

To keep one at a certain distance away, either physical or figurative, in order to afford a level of safety or security or to prevent intimacy. John always holds his friends at arm's length, so that no one gets close enough to hurt his feelings. My daughter likes to watch me cook, but I make sure to hold her at arm's length so she doesn't get close to anything hot.See also: hold, length

keep (one) at arm's length

To keep one a certain distance away, either physical or figurative, in order to afford a level of safety or security or to prevent intimacy. John always keeps his friends at arm's length, so that no one gets close enough to hurt his feelings. My daughter likes to watch me cook, but I make sure to keep her at arm's length so she doesn't get close to anything hot.See also: keep, length

go to great lengths (to do something)

To put in a lot of effort, energy, or work to achieve something. We went to great lengths to ensure that this film was historically accurate. I appreciate that the tutor went to great lengths to make sure I understood the assignmentSee also: go, great, length

measure your length

obsolete To lie or fall flat on some surface. He felt, as he measured his length on the hard stone beneath him, as though the gods were laughing at him in his misfortune.See also: length, measure

the length and breadth of (something)

The entire space or area of something or some place; everywhere in a place or area. The coach made me run the length and breadth of the field for the rest of practice for cursing at him. We're spending three months traveling the length and breadth of the East Coast this summer. I searched the length and breadth of the house, but I couldn't find my keys anywhere.See also: and, breadth, length, of

guarantee (something) against (something) for (some length of time)

To confirm or certify that an item or product will not break or deteriorate for a certain length of time (stated after "for"). I hope the company guaranteed your fancy new blender against breaking for at least a year.See also: guarantee, length, of

*at great length

for a long period of time. (*Typically: explain ~; question someone ~; speak ~.) The lawyer questioned the witness at great length.See also: great, length

at length

 1. after some time; finally. At length, the roses bloomed, and the tomatoes ripened. And at length, the wizard spoke. 2. and at some length for quite a long time. He spoke to us about the problem at some length. He described the history of his village at length.See also: length

go to any length

Fig. to do whatever is necessary. (See also (to do something)">go to great lengths (to do something).) I'll go to any length to secure this contract. I want to get a college degree, but I won't go to any length to get one.See also: any, go, length

go to great lengths (to do something)

 and go to any lengths (to do something)to work very hard to accomplish something; to expend great efforts in trying to do something. I went to great lengths to explain to him that he was not in any trouble.See also: go, great, length

keep at arm's length from someone or something

 and keep someone or something at arm's lengthFig. to retain a degree of physical or social remoteness from someone or something. I try to keep at arm's length from Larry, since our disagreement. I keep Tom at arm's length because we don't get along.See also: keep, length

at arm's length

At a distance, avoiding intimacy or familiarity, as in Bill hated seeing his colleagues outside the office, preferring to keep all of them at arm's length , or She was friendly only when he was safely at arm's length. Now often used with the verb keep, this term for distancing oneself from a person, organization, or issue originated as at arm's end but developed its current form by the mid-1600s. See also: length

at length

1. In full, extensively. For example, The preacher went on at length about sin, or I have read at length about these cameras. [c. 1500] 2. After a long time, finally, as in At length the procession ended. [Early 1500s] Also see in the long run. See also: length

go to any length

Also, go to great lengths. Take a great deal of trouble for something, go to extremes. For example, He'll go to great lengths to make a perfect chocolate cake, or, as Benjamin Disraeli put it in Coningsby (1844): "He would go ... [to] any lengths for his party." See also: any, go, length

at arm's length

COMMON If one person or organization is at arm's length from another, they are not closely connected, for example because it would be wrong for them to influence one another. The prison service is moving towards becoming a self-regulating agency at arm's length from government. Relations between the bank and the committee will be at arm's length until the report is delivered in July.See also: length

keep someone at arm's length

If you keep someone at arm's length, you avoid being friendly with them or getting emotionally involved with them. Brian felt more guilt than grief. He'd tried to get close, but his father had kept him at arm's length.See also: keep, length, someone

the length and breadth of something

COMMON If someone does something or something happens the length and breadth of a place, it is done or happens everywhere in that place. The group built their reputation by playing shows across the length and breadth of North America. She has travelled the length and breadth of Britain.See also: and, breadth, length, of, something

keep someone or something at arm's length

avoid intimacy or close contact with someone or something.See also: keep, length, someone, something

the length and breadth of

throughout the whole of (a place).See also: and, breadth, length, of

measure your length

(of a person) fall flat on the ground. datedSee also: length, measure

keep somebody at arm’s ˈlength

avoid becoming too friendly with somebody: He’s the kind of man who’s best kept at arm’s length.See also: keep, length, somebody

at ˈlength


1 (literary) after a long time: ‘I’m not sure,’ he said at length.
2 in great detail and taking a long time: She talked at length about her work in hospitals.See also: length

the length and ˈbreadth of something

everywhere in an area: I’ve travelled the length and breadth of Europe, but I’ve never seen such beautiful scenery as here.See also: and, breadth, length, of, something

go to any, great, etc. ˈlengths (to do something)

try very hard (to do something); do whatever is necessary: She went to great lengths to find this book.They were prepared to go to any lengths to help their son.See also: go, length

at arm's length

At such a distance that physical or social contact is discouraged: kept the newcomer at arm's length at first.See also: length

at length

1. After some time; eventually: At length we arrived at our destination.2. For a considerable time; fully: spoke at length about the court ruling.See also: length

keep at arm's length, to

To avoid familiarity, to keep someone at a distance. This expression, with its inevitable image of extending one’s arm to push someone away, has long been used figuratively to signify distancing oneself from a problem, group, political stand, and so forth. In the sixteenth century it was put as at arm’s end, as Sir Philip Sidney had it in Arcadia (1580), but by the mid-seventeenth century it began to appear as at arm’s length.See also: keep

length


length

1. Prosody Phonetics the metrical quantity or temporal duration of a vowel or syllable 2. the distance from one end of a rectangular swimming bath to the other 3. Prosody the quality of a vowel, whether stressed or unstressed, that distinguishes it from another vowel of similar articulatory characteristics. Thus in English beat is of greater length than in English bit 4. Cricket the distance from the batsman at which the ball pitches 5. Bridge a holding of four or more cards in a suit

Length

A one-dimensional extension in space. Length is one of the three fundamental physical quantities, the others being mass and time. It can be measured by comparison with an arbitrary standard; the specific one in most common usage is the international meter. In 1983, at the meeting of the Conférence Général des Poids et Mésures, the meter was redefined in terms of time and the speed of light: “The meter is the length of the path traveled by light in vacuum during a time interval of 1/299 792 458 of a second.” This definition defines the speed of light to be exactly 299 792 458 m/s, and defines the meter in terms of the most accurately known quantity, the second. See Light, Mass, Time

Length

 

a numerical characteristic of the extent of curves. The concept of length is defined differently for different cases. (1) The length of a line segment is the distance between its end points, measured by some segment taken as a unit of length. (2) The length of a polygonal line is the sum of the lengths of its components. (3) The length of a simple arc is the limit of the lengths of polygonal lines inscribed in the arc, when the number of components increases indefinitely and the maximum length of the components tends to zero. (4) The length of a continuous curve consisting of a finite number of simple arcs is equal to the sum of the lengths of these arcs. For example, the circumference of a circle can be obtained as the limit of the perimeters of inscribed regular polygons when the number of their sides is doubled indefinitely; it is equal to 2πR where R is the radius of the circle. Any continuous curve has finite or infinite length. If its length is finite, then the curve is said to be rectifiable. The graph (see Figure 1) of the function

for 0 <x ≤ 1 and f(x) = 0 when x = 0 is an example of a nonrectifiable curve; here the lengths of the inscribed polygonal lines increase beyond all bound as the length of the components tend to zero. If the equation of a plane curve has the form y =f(x) (a ^ x ^ b)m rectangular coordinates and the function f(x) has a continuous derivative f’(x), then the length of the curve is given by the integral

The length of a curve given in parametric form and the length of a space curve can be expressed in a similar manner.

Figure 1

To calculate the length of a curve the mathematicians of antiquity essentially used lengths of polygonal lines and passage to the limit. For them, however, such passage to the limit was only a method for calculating the length of a curve and not for defining the concept of the length of a curve, since they apparently perceived the latter as one of the elementary mathematical concepts. The necessity of defining the length of a curve became clear only in the first half of the 19th century. A full elucidation of the problem was achieved by C. Jordan. In differential geometry the length of a curve is also defined on a surface or in an arbitrary Riemannian space.

REFERENCES

Lebesgue, H. Ob izmerenii velichin, 2nd ed. Moscow, 1960. (Translated from French.)
Fikhtengol’ts, G. M. Kurs differentsial’nogo i integral’nogo ischisleniya, 7th ed. vol. 2. Moscow, 1969.

length

[leŋkth] (mechanics) Extension in space.

length


length

 [length] an expression of the longest dimension of an object, or of the measurement between its two ends.crown-heel length (CHL) the distance from the crown of the head to the heel in embryos, fetuses, and infants; the equivalent of standing height in older persons.Measuring an infant's crown-heel length. From Lammon et al., 1996.crown-rump length (CRL) the distance from the crown of the head to the breech in embryos, fetuses, and infants; the equivalent of sitting height in older subjects.cycle length in pacing" >cardiac pacing terminology, the time interval in milliseconds from one event to the next; it is the inverse of the rate" >intrinsic rate (beats per minute) or the rate" >paced rate (pulses per minute).focal length the distance between a lens and an object from which all rays of light are brought to a focus.

length (l),

(length), Avoid the mispronunciation lenth.Linear distance between two points.

length

The linear distance between 2 points. See Collateral length, Pulse length, Stride length.

length

(length) Linear distance between two points.

length

(length) Avoid the mispronunciation lenth.Linear distance between two points.
FinancialSeeBreadthSee LGTH
See LEN

length


  • all
  • noun
  • phrase

Synonyms for length

noun distance

Synonyms

  • distance
  • reach
  • measure
  • extent
  • span
  • longitude

noun duration

Synonyms

  • duration
  • term
  • period
  • space
  • stretch
  • span
  • expanse

noun piece

Synonyms

  • piece
  • measure
  • section
  • segment
  • portion

noun lengthiness

Synonyms

  • lengthiness
  • extent
  • elongation
  • wordiness
  • verbosity
  • prolixity
  • long-windedness
  • extensiveness
  • protractedness

phrase at length: at last

Synonyms

  • at last
  • finally
  • eventually
  • in time
  • in the end
  • at long last

phrase at length: for a long time

Synonyms

  • for a long time
  • completely
  • fully
  • thoroughly
  • for hours
  • in detail
  • for ages
  • in depth
  • to the full
  • exhaustively
  • interminably

Synonyms for length

noun the measure of how far or long something goes in space, time, or degree

Synonyms

  • extent
  • reach
  • span
  • stretch

noun an extent, measured or unmeasured, of linear space

Synonyms

  • distance
  • space
  • stretch
  • piece
  • way

noun the ultimate point to which an action, thought, discussion, or policy is carried

Synonyms

  • end
  • extreme
  • limit

Synonyms for length

noun the linear extent in space from one end to the other

Related Words

  • physical property
  • dimension
  • circumference
  • diam
  • diameter
  • radius
  • r
  • longness
  • shortness
  • fundamental measure
  • fundamental quantity

noun continuance in time

Synonyms

  • duration

Related Words

  • temporal property
  • longness
  • protraction
  • lengthiness
  • prolongation
  • continuation
  • endlessness
  • shortness
  • brevity
  • briefness
  • transience
  • permanence
  • permanency
  • impermanence
  • impermanency

noun the property of being the extent of something from beginning to end

Related Words

  • extent

noun size of the gap between two places

Synonyms

  • distance

Related Words

  • leg
  • size
  • arm's length
  • gauge
  • light time
  • skip distance
  • wingspan
  • wingspread
  • altitude

noun a section of something that is long and narrow

Related Words

  • segment
  • section
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