orthophyric

[ awr-thuh-fahy-rik ]
/ ˌɔr θəˈfaɪ rɪk /

adjective Petrography.

of or relating to a texture in which the groundmass is characterized by closely packed, short, quadrilateral crystals of feldspar larger than those in a trachytic groundmass.

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Origin of orthophyric

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020