Dictionary
por•ten•tous
Pronunciation: (pôr-ten'tus, pōr-), [key]—
adj.
1. of the nature of a portent; momentous.
2. ominously significant or indicative:
a portentous defeat.
3. marvelous; amazing; prodigious.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.