du·​ra·​tion | \ du̇-ˈrā-shən How to pronounce duration (audio) also dyu̇- \

Definition of duration

1 : continuance in time gradually increase the duration of your workout
2 : the time during which something exists or lasts were there for the duration of the concert

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Examples of duration in a Sentence

You should gradually increase the duration of your workout. for the whole duration of the speech the bored audience fidgeted
Recent Examples on the Web The mission marked the first long-duration flight for SpaceX and the company's second with astronauts. Editors, USA TODAY, "Here's the biggest news you missed this weekend," 2 May 2021 Winds began to pick up speed during the morning hours as the National Weather Service warned of a long-duration wind event. Washington Post, "Gusty winds knock down trees across the D.C. region, leave thousands without power," 30 Apr. 2021 The local geology is perfectly suited for long-duration carbon sequestration. Brentan Alexander, Forbes, "Meeting Biden’s Climate Goals Requires Giving Exxon A Seat At The Table," 28 Apr. 2021 The crew for the second long-duration SpaceX Crew Dragon mission to the International Space Station, NASA’s SpaceX Crew-2, is pictured during a training session at the SpaceX training facility in Hawthorne, California. Stefanie Waldek, Travel + Leisure, "SpaceX Is Launching 4 Astronauts to the ISS on April 22 — How to Watch It Online," 16 Apr. 2021 Hydrogen can even store energy, acting similar to a long-duration battery to provide power to the grid when renewable energy is in short supply. Abby Smith, Washington Examiner, "Biden administration and industry alike see hydrogen as 'Swiss Army knife' for eliminating emissions," 15 Apr. 2021 The station would be NASA’s first attempt at long-duration crew missions lasting up to several months. Jonathan O’callaghan, Smithsonian Magazine, "How Do Astronauts Spend Their Weekends in Space?," 13 Apr. 2021 Levine is concerned that astronauts could be at risk of developing this during long-duration spaceflight. Ashley Strickland, CNN, "This is how the human heart adapts to space," 29 Mar. 2021 Bacteria that have slipped Earth’s surly bonds can also become more resistant to antibiotics—a recipe for disaster, given the fact that long-duration spaceflight tends to weaken astronauts’ immune systems. Shannon Hall, Scientific American, "NASA Will Map Every Living Thing on the International Space Station," 11 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'duration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of duration

14th century, in the meaning defined at sense 1

History and Etymology for duration

see durance

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Time Traveler for duration

Time Traveler

The first known use of duration was in the 14th century

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Statistics for duration

Last Updated

10 May 2021

Cite this Entry

“Duration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duration. Accessed 14 May. 2021.

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More Definitions for duration



English Language Learners Definition of duration

: the length of time that something exists or lasts


du·​ra·​tion | \ du̇-ˈrā-shən How to pronounce duration (audio) , dyu̇- \

Kids Definition of duration

: the time during which something exists or lasts The illness is of short duration.

Comments on duration

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