/ Dictionary / Index O ornithic: Meaning and Definition of Find definitions for: or•nith•ic Pronunciation: (ôr-nith'ik), [key] — adj. of or pertaining to birds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ornith- ornithine Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language