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Definition lifetime in British English

lifetime noun

[countable] noun
/ˈlaɪfˌtaɪm/
1

the period of time when someone is alive

Example

He achieved a lot in his short lifetime.

Example

There have been many changes during my lifetime.

Example

A cure for cancer could be found within our children's lifetime.

Synonyms and related words
2

the length of time that something exists or works

Example

plans to extend the lifetime of the power station

Example

We aim to halve unemployment within the lifetime of this government.

Synonyms and related words
Definition lifetime in British English