greenschist

[ green-shist ]
/ ˈgrinˌʃɪst /

noun Petrology.

schist colored green by an abundance of chlorite, epidote, or actinolite.

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Origin of greenschist

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

Scientific definitions for greenschist

greenschist
[ grēnshĭst′ ]

A green, schistose metamorphic rock that gets its color from the presence of chlorite, epidote, or actinolite. Greenschist forms under conditions of low temperature and low pressure.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.