Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Noun: lifespan  'lIf,span
  1. The period during which something is functional (as between birth and death)
    "the battery had a short lifespan";
    - life, lifetime

Derived forms: lifespans

Type of: period, period of time, time period, time span

Encyclopedia: Lifespan