/ Dictionary / Index I Ichthyornis*: Meaning and Definition of Find definitions for: Ich•thy•or•nis Pronunciation: (ik"thē-ôr'nis), [key] — n. an extinct genus of toothed birds having vertebrae resembling those of fishes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ichthyophthirius ichthyosarcotoxin Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language