Dictionary
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. Slang.outdated; passé:
My mom has these prehistoric ideas about proper dress. Also,pre"his•tor'i•cal.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.