/ Dictionary / Index O ornithol.: Meaning and Definition of Find definitions for: ornithol. Pronunciation: [key] ornithological. ornithology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ornithoid ornithology 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