Pronunciation: (ôr"jē-as'tik), [key]
1. of, pertaining to, or having the nature of an orgy.
2. tending to arouse or excite unrestrained emotion: orgiastic rhythms.
3. Sociol. (of an expressive crowd) reaching a peak of emotional intensity, often of an ecstatic nature and frequently expressed by uninhibited behavior.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.