adjective pro·to·clas·tic \¦prōtə¦klastik\

Definition of protoclastic

  1. :  of, relating to, or constituting the texture of an igneous rock whose earlier crystals show deformation and granulation produced before the complete solidification of the magma

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Origin and Etymology of protoclastic

German protoklastisch, from prot- + -klastisch -clastic

Seen and Heard

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to cast off or become cast off

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