noun
The length of time a person, animal, or plant lives.
The average human lifespan is getting longer.
Common phrases & grammar
average lifespan · long lifespan
American English
How to pronounce lifespan
nounB2
LAIFspaan
/ˈlaɪfˌspæn/
2 syllables · Stress the first syllable.
The length of time a person, animal, or plant lives.
Practice out loudMeanings & examples
noun
The length of time that something remains useful or works.
This battery has a lifespan of about five years.
Common phrases & grammar
expected lifespan · short lifespan