phonolite

noun
pho·​no·​lite | \ ˈfō-nə-ˌlīt How to pronounce phonolite (audio) \

Definition of phonolite

: a gray or green volcanic rock consisting essentially of orthoclase and nepheline

First Known Use of phonolite

1831, in the meaning defined above

History and Etymology for phonolite

French, from German Phonolith, from phon- + -lith; from its ringing sound when struck

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The first known use of phonolite was in 1831

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miscellaneous remnants or debris

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