/ Dictionary / Index A aphanite: Meaning and Definition of Find definitions for: aph•a•nite Pronunciation: (af'u-nīt"), [key] — n. Petrog. a fine-grained igneous rock having such compact texture that the constituent minerals cannot be detected with the naked eye. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aphanite (Thesaurus) aphakia aphasia Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language