poikiloblastic

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

adjective Petrography.

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

Origin of poikiloblastic

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019