WordReference Random House Unabridged Dictionary of American English © 2026
pho•no•lite
(fōn′l īt′),USA pronunciation n.
pho•no•lit•ic
(fōn′l it′ik),USA pronunciation adj.
- Rocksa fine-grained volcanic rock composed chiefly of alkali feldspar and nepheline, some varieties of which split into pieces that ring on being struck.
- German Phonolith. See phono-, -lite
- French
- 1820–30;