Meaning of prehistoric

pre•his•tor•ic

Pronunciation: (prē"hi-stôr'ik, -stor'-, prē"i-), [key]
— adj.
  1. of or pertaining to the time or a period prior to recorded history: The dinosaur is a prehistoric beast.
  2. outdated; passé: My mom has these prehistoric ideas about proper dress.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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