lifetime

[lahyf-tahym]

noun

1. the time that the life of someone or something continues; the term of a life.

   peace within our lifetime.

2. Physics.,  mean life.

adjective

1. for the duration of a person's life.

   He has a lifetime membership in the organization.

lifetime

/ ˈlaɪfˌtaɪm /

noun

1. 1. the length of time a person or animal is alive

   2. ( as modifier )

      a lifetime supply

2. the length of time that something functions, is useful, etc

3. physics the average time of existence of an unstable or reactive entity, such as a nucleus, excited state, elementary particle, etc; mean life

Word History and Origins

Origin of lifetime¹

First recorded in 1175–1225, lifetime is from the Middle English word liftime. See life, time

Example Sentences

I asked King Abdullah if he believed he would see a final peace agreement including a Palestinian state within his own lifetime?

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Her biggest asset is her lifetime of hard work, whether as a Marine or owning an appliance business.

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During the hearing, she gushed that he’s “the greatest peace president of our lifetime, probably in our history.”

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More than 75 percent of married Bangladeshi women experience violence from partners at least once in their lifetime, a national survey published Monday said.

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One in two people worldwide may develop a mental health disorder in their lifetime, according to studies from Harvard Medical School and the University of Queensland - treating it has become a multi-billion-dollar business.

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Related Words

• career 
• life 
• period