Pronunciation: (u-bis'), [key]
1. a deep, immeasurable space, gulf, or cavity; vast chasm.
2. anything profound, unfathomable, or infinite: the abyss of time.
3. (in ancient cosmogony)
a. the primal chaos before Creation.
b. the infernal regions; hell.
c. a subterranean ocean.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.