1
a
: the duration of the existence of a living being (such as a person or an animal) or a thing (such as a star or a subatomic particle)
b
2
: an amount accumulated or experienced in a lifetime
a lifetime of regrets
1
: lifelong
2
: of long duration or continuance
lifetime legislation
3
: measured or achieved over the span of a career
a baseball player's lifetime batting average
Synonyms
Examples of lifetime in a Sentence
Noun
a lifetime spent traveling the world
It would have taken me a lifetime to read all those books.
Childhood seems a lifetime ago now!
a chemical with a lifetime of only a few minutes
the lifetime of a planet
Recent Examples on the Web
Natalie Krebs, Outdoor Life, 14 Nov. 2024
The 2025-26 season will provide a long onramp for the orchestra’s leadership transition: St.Clair will lead three subscription weeks in the coming season before assuming his lifetime appointment as Music Director Laureate.
—Samantha Dunn, Orange County Register, 13 Nov. 2024
Stephan Rabimov, Forbes, 24 May 2021
In addition to keynote speeches, panel discussions, workshops and networking, the 2019 Music Biz conference will again take time to recognize both recent and lifetime achievements.
—Gary Graff, Billboard, 29 Apr. 2019
See all Example Sentences for lifetime 
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Noun
One weekend trip does not a lifetime license buyer make.
—Natalie Krebs, Outdoor Life, 14 Nov. 2024
The 2025-26 season will provide a long onramp for the orchestra’s leadership transition: St.Clair will lead three subscription weeks in the coming season before assuming his lifetime appointment as Music Director Laureate.
—Samantha Dunn, Orange County Register, 13 Nov. 2024
Adjective
Getting an Emmy award is a lifetime dream for many.
—Stephan Rabimov, Forbes, 24 May 2021
In addition to keynote speeches, panel discussions, workshops and networking, the 2019 Music Biz conference will again take time to recognize both recent and lifetime achievements.
—Gary Graff, Billboard, 29 Apr. 2019
See all Example Sentences for lifetime
Dictionary Entries Near lifetime
Cite this Entry
“Lifetime.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lifetime. Accessed 25 Nov. 2024.
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