• synonyms


noun Petrology.
  1. schist colored green by an abundance of chlorite, epidote, or actinolite.
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Compare greenstone.

Origin of greenschist

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

greenschist in Science


  1. 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.
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