pisolith

[ pis-uh-lith, piz-, pahy-suh- ]
/ ˈpɪs ə lɪθ, ˈpɪz-, ˈpaɪ sə- /

noun

a pea-size calcareous concretion, larger than an oolith, aggregates of which constitute a pisolite.

Origin of pisolith

First recorded in 1790–1800; see origin at pisolite, -lith