/ Dictionary / Index O ostrakon: Meaning and Definition of Find definitions for: os•tra•kon Pronunciation: (os'tru-kon"), [key] — pl. -ka ostracon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ostracon Ostrava 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