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length

LENGKTH/lɛŋ(k)θ/

Plurallengths

12 meanings of length

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  1. 1
    physical sizenouncountable or uncountable
    The measurement of how far something extends from one end to the other, especially along its longest side.

    The carpenter recorded the length of each beam before assembly.

    Engineers calculated the bridge's total length down to the millimeter.

    UsageAfter a number: ten meters long or ten meters in length. The phrase the length of names the measurement: the length of the beam.

    Note

    The central meaning, and the one that explains the word's shape: Old English lengþ is long plus -th, the same abstract-noun ending found in strength and width. Time shares the word too, while a horse's body and a hand of cards borrow this measurement later. Distance is the broader word, the space between any two points. Length is distance taken along a thing itself, the long way.

    Checked 5 Nov 2026 · 3 facts

    • Length comes from Old English lengþ and is etymologically equivalent to long plus the abstract-noun suffix -th. en.wiktionary.org
    • Strength and width contain the same abstract-noun suffix. en.wiktionary.org
    • Strength contains the abstract-noun suffix -th. en.wiktionary.org
  2. 2
    time it lastsnouncountable or uncountable
    The amount of time that something continues or lasts.

    The length of the trial stretched the patience of the jury.

    Doctors monitored the length of each patient's recovery.

    Similarduration, span, term, period

    Note

    Time measured like space: the physical measurement also describes how long something lasts, so a trial has length just as a beam does. Robert Frost leans on both senses at once in a poem titled "Happiness Makes Up in Height for What It Lacks in Length." Happiness is short in time, and the title measures it like an object.

    Checked 5 Nov 2026 · 3 facts

    • Robert Frost wrote a poem titled Happiness Makes Up in Height for What It Lacks in Length, with the quoted wording. commons.wikimedia.org
    • The quotation is the poem's title; it does not occur in the body, which begins 'Oh, stormy stormy world,'. archive.org
    • The poem presents happiness as brief, supporting the note's interpretation of length as duration. archive.org
  3. 3
    full extentnounfigurativelyusually singular
    The extent or degree to which an action or effort is carried, especially in expressions such as "go to great lengths."

    Few people expected the company to go to the length of suing its own customers.

    Investigators were stunned by the length to which the firm had gone to hide its losses.

    UsageMostly in set phrases: go to great lengths to, go to any length(s), go to the length of doing something.

    Similarextent, reach, scope

  4. 4
    piecenouncountable
    A piece or section of something long, such as rope, pipe, or fabric.

    The plumber fitted a new length of copper pipe under the sink.

    She draped a length of silk across the table for the display.

    UsageUsually a length of + material: a length of rope, two lengths of pipe.

    Similarpiece, section, segment, strip

Practice

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Origin

From Middle English lengthe, from Old English lengþ, going back to Proto-Germanic *langiþō. It is essentially "long" combined with the abstract noun suffix "-th," and is related to Dutch lengte, Low German Längde, Danish længde, and Swedish längd.