26984 words

lifespan

2 definitions • 4 examples
1
the length of time for which a person, animal, or thing exists:

Examples:

The average human lifespan in the developed countries has increased over the last hundred years.
The project's lifespan is estimated at about five years.
2
the length of time for which something exists or lasts:

Examples:

It is battery operated and has a lifespan of two to three years.
over sth's lifespan Water entering the reservoir over its lifespan adds decaying plant matter.

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