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noun, \ˈleŋ(k)th, ˈlen(t)th\

Simple Definition of length

  • : the distance from one end of something to the other end : a measurement of how long something is

  • : the size or extent of a piece of writing

  • : the quality or state of being long

Source: Merriam-Webster's Learner's Dictionary

Full Definition of length

plural lengths play \ˈleŋ(k)ths, ˈlen(t)ths, ˈleŋ(k)s\

  1. 1 a :  the longer or longest dimension of an object b :  a measured distance or dimension <10 feet in length> — see metric system table, weight table c :  the quality or state of being long

  2. 2 a :  duration or extent in time b :  relative duration or stress of a sound

  3. 3 a :  distance or extent in space b :  the length of something taken as a unit of measure <his horse led by a length>

  4. 4 :  the degree to which something (as a course of action or a line of thought) is carried —often used in plural <went to great lengths to learn the truth>

  5. 5 a :  a long expanse or stretch b :  a piece constituting or usable as part of a whole or of a connected series :  section <a length of pipe>

  6. 6 :  the longer or vertical dimension of a piece of clothing —often used in combination <elbow-length sleeves>

at length
  1. 1 :  fully, comprehensively

  2. 2 :  at last :  finally

Examples of length in a sentence

  1. The length of the table is six feet, and its width is three feet.

  2. These pins are available in one- and two-inch lengths.

  3. The adult animals reach a maximum length of two meters.

  4. Your essay should be no more than 250 words in length.

  5. the length of a movie

  6. They were two car lengths behind us.

Origin of length

Middle English lengthe, from Old English lengthu, from lang long

First Known Use: before 12th century

Other Weights and Measures Terms

LENGTH Defined for Kids


noun \ˈleŋth\

Definition of length for Students

  1. 1 :  the measured distance from one end to the other of the longer or longest side of an object

  2. 2 :  a measured distance <The road is three miles in length.>

  3. 3 :  the amount of time something takes <The movie is two hours in length.>

  4. 4 :  a piece of something that is long <She bought a length of pipe.>

  5. 5 :  the distance from top to bottom of an article of clothing <knee-length pants>

  6. 6 :  the sound of a vowel or syllable as it is affected by the time needed to pronounce it

at length
  1. 1 :  very fully <We discussed the problem at length.>

  2. 2 :  at the end :  finally <They decided at length to order pizza.>

Seen and Heard

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to expose to danger or risk

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