: a porphyritic igneous rock chiefly of feldspar and quartz with granular groundmass

Word History

Etymology

International Scientific Vocabulary, from grano- + French -phyre (as in porphyre porphyry)

First Known Use

1882, in the meaning defined above

Time Traveler
The first known use of granophyre was in 1882

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Cite this Entry

“Granophyre.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/granophyre. Accessed 25 Mar. 2025.

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