Lifespan
/lˈaɪˌfspæn/
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Definition
(noun) The length of time for which an organism lives.
Sentence Examples
If you feed your dog properly, you can increase his lifespan.
Adopting a low calorie diet will increase your lifespan.
CEFR Practice Quiz
The average ____ of a domestic cat is around fifteen years, but some can live for much longer than that.