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microlitic

American  
[mahy-kruh-lit-ik] / ˌmaɪ krəˈlɪt ɪk /

adjective

Petrography.
  1. of or relating to the texture of a porphyry whose groundmass consists of microlites in a glassy matrix.


Etymology

Origin of microlitic

First recorded in 1875–80; microlite + -ic