/ Dictionary / Index G ganoin: Meaning and Definition of Find definitions for: gan•o•in Pronunciation: (gan'ō-in), [key] — n. Ichthyol. a hard, shiny, enamellike substance secreted by the corium, composing the outer layer of the scales of certain fishes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ganoin (Thesaurus) ganoid Gansevoort Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language