agaroid

noun

ag·​a·​roid

ˈa-gə-ˌrȯid

plural -s

: a substance similar to agar in properties that is obtained from certain red algae (as of the genus Phyllophora)

Word History

First Known Use

1943, 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