Pronunciation: (u-bas'id, ab'u-sid), [key]
a member of a dynasty of caliphs ruling at Baghdad, a.d. 750–1258, governing most of the Islamic world and claiming descent from Abbas, uncle of Muhammad. Also,Ab•bas'sid,Ab•bas•sidePronunciation: (u-bas'īd, ab'u-sīd"). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.