Definition of Goniaster
: a common genus (the type of the family Goniasteridae) of cushion stars consisting of nearly pentagonal, rigid, and often brightly colored starfishes
What's Trending Now
More Trending Words
There's more!
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 goniaster
New Latin, from goni- + -aster
Seen and Heard
What made you want to look up Goniaster? Please tell us where you read or heard it (including the quote, if possible).
