biolith

noun

bi·​o·​lith

ˈbīōˌlith

variants or less commonly biolite

-ˌlīt

plural -s

: a rock of organic origin : a rock produced directly by the activities of organisms

Word History

Etymology

International Scientific Vocabulary bi- entry 2 + -lith or -lite; originally formed as German biolith

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now