/ Dictionary / Index O ostracism: Meaning and Definition of Find definitions for: os•tra•cism Pronunciation: (os'tru-siz"um), [key] — n. exclusion, by general consent, from social acceptance, privileges, friendship, etc. (in ancient Greece) temporary banishment of a citizen, decided upon by popular vote. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ostracism (Thesaurus) Ostpreussen ostracize Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language