WordReference Random House Unabridged Dictionary of American English © 2026
coc•co•lith
(kok′ə lith′),USA pronunciation n.
coc′co•lith′ic, adj.
- Geology, Microbiologya microscopic calcareous disk or ring making up part of the covering of certain marine plankton and forming much of the content of chalk rocks.
- Neo-Latin Coccolithus origin, originally a genus name; see coccus, -o-, -lith
- 1865–70