/ Dictionary / Index A aplite: Meaning and Definition of Find definitions for: ap•lite Pronunciation: (ap'līt), [key] — n. Petrol. a fine-grained granite composed essentially of feldspar and quartz. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aplite (Thesaurus) aplenty aplomb Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language