Definition of Clypeaster
: a widely distributed genus (the type of the family Clypeastridae) of large burrowing cake urchins
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of clypeaster
New Latin, from Latin clypeus round shield + New Latin -aster
Seen and Heard
What made you want to look up Clypeaster? Please tell us where you read or heard it (including the quote, if possible).