/ Dictionary / Index O Oneonta: Meaning and Definition of Find definitions for: O•ne•on•ta Pronunciation: (ō"nē-on'tu), [key] — n. a city in E central New York. 14,933. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. one-on-one one-piece Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language