Noun: lifetime 'lIf,tIm
- The period during which something is functional (as between birth and death)
"the battery had a short lifetime";
- life, lifespan
- A prolonged period of time
"They hadn't seen each other for a lifetime";
- long time, age, years, donkey's years [Brit, informal], yonks [Brit, informal]
Derived forms: lifetimes
Type of: period, period of time, time period, time span
Encyclopedia: Lifetime