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Noun: lifespan  'lIf`span
  1. The period during which something is functional (as between birth and death)
    - life, lifetime, life-time

Derived forms: lifespans

Type of: period, period of time, time period

Encyclopedia: Lifespan

Nearest

lifeline
lifelong
life-of-man
life-or-death
lifer
lifesaver
lifesaving
lifesize
life-size
life-sized
lifespan
lifestyle
life-style
life-support
life-support system
life-sustaining
life-threatening
lifetime
life-time
lifework
LIFO