/ Dictionary / Index A Antiochus III: Meaning and Definition of Find definitions for: An•ti•o•chus III Pronunciation: (an-tī'u-kus), [key] (“the Great”) 241?–187 b.c., king of Syria 223–187. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Antioch Antiochus IV Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language