Archaeocyatha

plural noun

Ar·​chaeo·​cy·​a·​tha

in some classifications

: a phylum of extinct animals of uncertain systematic relations represented by fossils of the genus Archaeocyathus

Word History

Etymology

New Latin, from Archaeocyathus

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