Pronunciation: ' gran- ə - ˌ f ī (- ə )r
Function: noun
Etymology: International Scientific Vocabulary, from grano- + French -phyre (as in porphyre porphyry)
Date: 1882
: a porphyritic igneous rock chiefly of feldspar and quartz with granular groundmass
– grano · phyr · ic \ ˌ gran- ə - ' fir-ik \ adjective