/ Dictionary / Index P phonolite: Meaning and Definition of Find definitions for: pho•no•lite Pronunciation: (fōn'l-īt"), [key] — n. a fine-grained volcanic rock composed chiefly of alkali feldspar and nepheline, some varieties of which split into pieces that ring on being struck. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phonol. phonological rule Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language