[ ep-i-dahy-uh-rahyt ]
/ ˌɛp ɪˈdaɪ əˌraɪt /
a schistose metamorphic rock resulting from the alteration of augite to hornblende in a gabbro or dolerite.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for epidiorite
The metamorphic rocks are associated with bands of epidiorite which have shared in the folding and metamorphism of the region.