English

protomylonite

From proto- + mylonite.

Proto-Indo-European *pér ‘through’

Proto-Indo-European *pró ‘forwards, before’

Proto-Hellenic *pró

Ancient Greek πρό ‘before’

Ancient Greek πρῶτος ‘first’

Proto-Indo-European *melh₂- ‘to grind’

Proto-Hellenic *mólā

Ancient Greek μῠ́λη ‘mill’

Ancient Greek μυλών ‘mill’

Today it means

noun A mylonite where most of the rock volume has not been ground into matrix and so contains its original texture.

Language periods are conventional ranges, not dates for this word.

Etymograph / protomylonite