/ Dictionary / Index O Onondaga: Meaning and Definition of Find definitions for: On•on•da•ga Pronunciation: (on"un-dô'gu, -dä'-, -dā'-), [key] — pl. -gas, -ga a member of a tribe of Iroquoian Indians formerly inhabiting the region of Onondaga Lake. the dialect of the Seneca language spoken by these Indians. a salt lake in central New York. 5 mi. (8 km) long; 1 mi. (1.6 km) wide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: onondaga (Thesaurus) onomatopoeia on-peak Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language