lifetime

Meanings

1. 1
   noun

   The duration of the life of someone or something.

   a project that will take many human lifetimes to complete

2. 2
   noun

   A long period of time.

   I've been waiting a lifetime for a train.

3. 3
   noun

   the period during which something is functional (as between birth and death)

Etymology

From Middle English lyftyme, equivalent to life + time. Cognate with Icelandic líftími (“lifetime”). Compare also Saterland Frisian Lieuwendstied, Dutch leeftijd and levenstijd, German Low German Levenstied, German Lebenszeit, Danish livstid, Swedish livstid.