Webster’s Revised Unabridged Dictionary · 1913
Clastic
Clas′tic (klăs′tĭk), a. [Gr. κλαστός broken, fr. κλᾶν to break.] 1. Pertaining to what may be taken apart; as, clastic anatomy (of models).
2. (Min.) Fragmental; made up of broken fragments; as, sandstone is a clastic rock.