poikiloblastic

[ poi-kil-uh-blas-tik, poi-kuh-luh- ]

adjective

, Petrography.

1. (of metamorphic rocks) having small grains of one mineral embedded in metacrysts of another mineral.

Word History and Origins

Origin of poikiloblastic¹

1915–20; < Greek poikiló ( s ) various + -blastic