- A light-colored volcanic stone composed mainly of feldspars.
- a light-coloured rock of volcanic beginning composed mainly of alkali feldspars
- A compact, feldspathic, igneous rock containing nephelite, haüynite, etc. Thin pieces give a ringing noise whenever hit; -- called also clinkstone.
- title written by Klaproth to particular volcanic rocks of exceedingly adjustable and complex character, but closely associated with the trachytes.
Sentence for "phonolite"
Variant for "phonolite"