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English definition of “length”

length

noun uk   /leŋθ/ us  

length noun (DISTANCE)

B1 [C or U] the measurement of something from end to end or along its longest side: The boat is ten metres in length. The length of the bay is approximately 200 miles. She planted rose bushes (along) the length of the garden (= the whole distance along it). [C] a piece of something such as string or pipe: a length of rope [C] a unit used in describing the distance by which a horse or boat wins a race, equal to the measurement from one end of the horse or boat to the other: We won by two lengths. [C] the distance from one end of a swimming pool to the other: She swims 40 lengths a day.

length noun (TIME)

B2 [C] the amount of time something lasts: the length of a film/speech/play He is unable to concentrate on his work for any length of time (= for anything more than a short time). C1 [C or U] the amount of writing in a book or document: He's written books of various lengths on the subject. All of your essays will be about the same length. at length C2 for a long time: George went on at great length about his various illnesses. formal If something happens at length, it happens after a long period of time: At length, the authorities allowed her to go home.
(Definition of length noun from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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