placula

noun

plac·​u·​la

ˈplakyələ

plural placulas

-yələz

or placulae

-yəˌlē

: the flattened blastula of urochordates or a similar oligochaete embryo

Word History

Etymology

New Latin, from plac- + Latin -ula

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