adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Describing a sedimentary rock that is composed of the remains of small organisms
2. 2
   Describing a form of erosion or formation caused by the action of living organisms

Etymology

From bio- + clastic.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.