cryptozoic: Meaning and Definition of

cryp•to•zo•ic

Pronunciation: (krip"tu-zō'ik), [key]
— adj.
  1. (cap.)of or pertaining to that part of Precambrian time whose stratigraphic record yields only sparse, primitive fossils.
  2. living in concealed or secluded places.
—n.
  1. (cap.)the part of Precambrian time whose stratigraphic record yields only sparse, primitive fossils.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.