as in duration
the period during which something exists, lasts, or is in progress
the lifetime of the camera's batteries was so short we couldn't get through a day trip without having to replace them
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Recent Examples of lifetime
The 82-year-old was diagnosed with an aggressive form of prostate cancer, the second most common cancer among men, with 1 in 8 being diagnosed in their lifetime, according to the American Cancer Society.
—
Sam Woodward, USA Today, 23 May 2025
Join 5 others in the comments View Comments Scientists believe quasars and galaxy mergers used to be far more common earlier in the universe’s lifetime, said Dong-Woo Kim, an astrophysicist with the Harvard and Smithsonian Center for Astrophysics who was not involved in the research.
—Kameryn Griesser, CNN Money, 23 May 2025
These are shoes that can last you a lifetime, and this is speaking from experience—I’ve had my Birkenstock slides for nearly 10 years.
—Abby Morgan Lebet, Glamour, 23 May 2025
Trapping was never a way to get rich, certainly not in my lifetime.
—Ted Updike, Outdoor Life, 22 May 2025
See All Example Sentences for lifetime
Sam Woodward, USA Today, 23 May 2025
Join 5 others in the comments View Comments Scientists believe quasars and galaxy mergers used to be far more common earlier in the universe’s lifetime, said Dong-Woo Kim, an astrophysicist with the Harvard and Smithsonian Center for Astrophysics who was not involved in the research.
—Kameryn Griesser, CNN Money, 23 May 2025
These are shoes that can last you a lifetime, and this is speaking from experience—I’ve had my Birkenstock slides for nearly 10 years.
—Abby Morgan Lebet, Glamour, 23 May 2025
Trapping was never a way to get rich, certainly not in my lifetime.
—Ted Updike, Outdoor Life, 22 May 2025
See All Example Sentences for lifetime
Recent Examples of Synonyms for lifetime
Noun
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The way blind people see the world depends on the type, severity, and duration of their vision loss.—
Anna Giorgi,
Verywell Health,
6 June 2025
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For example, my company continuously calculates take-home pay, taxes, health care premiums, retirement contributions, and other withholdings for our customers and their employees, regardless of the duration between pay cycles.—
Matt Robison,
MSNBC Newsweek,
5 June 2025
Noun
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There’s another aspect of the show that mirrors modern times: A seething anger so strong that in one bit Judas deliberately walks into Jesus.—
Matthew J. Palm,
The Orlando Sentinel,
4 June 2025
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The time for open debate and implementable conclusions is now is now.—
Cornelia C. Walther,
Forbes.com,
4 June 2025
Noun
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Celeste Dalla Porta stars as the titular Parthenope, a young woman attending college who starts an illicit relationship with a professor that leads to a number of striking choices in her life.—
K. Thor Jensen,
PC Magazine,
30 May 2025
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Narrating this account of her brief life, Emily provides a sharp perspective on the penury and isolation that created such anguish — and such inspiration — for the Brontë sisters.—
Alida Becker,
New York Times,
30 May 2025
Cite this Entry
“Lifetime.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/lifetime. Accessed 12 Jun. 2025.
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