Duration Definition

do͝o-rāshən, dyo͝o-
noun
Continuance in time.
Webster's New World
A period of existence or persistence.
Sat quietly through the duration of the speech.
American Heritage
The time that a thing continues or lasts.
Webster's New World
The number of years required to receive the present value of future payments, both of interest and principle, of a bond, often used as an indicator of a bond's price volatility resulting from changes in interest rates.
American Heritage

(in the singular, not followed by "of") The time taken for the current situation to end, especially the current war.

Rationing will last at least for the duration.
Wiktionary
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Other Word Forms of Duration

Noun

Singular:
duration
Plural:
durations

Origin of Duration

  • Middle English duracioun from Old French duration from Medieval Latin dūrātiō dūrātiōn- from Latin dūrātus past participle of dūrāre to last deuə- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French, from Medieval Latin duratio

    From Wiktionary

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