Acrotreta

noun

Ac·​ro·​tre·​ta

ˌa-krō-ˈtrē-tə

: a genus of brachiopods known from small fossil shells common in Cambrian rocks

Word History

Etymology

New Latin, from acr- + -treta (from Greek trētos perforated)

First Known Use

1851, in the meaning defined above

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