lifespan
//ˈlaɪf.spæn//
Noun
lifespanSingular
lifespansPlural
1
The length of time that a person, animal, or thing exists or is expected to exist.
The average lifespan of a cat is about 15 years.
2
The period during which something, such as a product or technology, remains functional or relevant.
The lifespan of this smartphone battery is about three years.