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Meaning of cataclasis

cat•a•cla•sis

Pronunciation: (kat"u-klā'sis, ku-tak'lu-sis), [key]
— n. Petrol.
  1. a process of deformation or metamorphism in which the grains of a rock are fractured and rotated.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.