/ Dictionary / Index I ichthyology: Meaning and Definition of Find definitions for: ich•thy•ol•o•gy Pronunciation: (ik"thē-ol'u-jē), [key] — n. the branch of zoology dealing with fishes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ichthyology (Thesaurus) ichthyolite ichthyophagist Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language