sea urchin

noun

: any of numerous echinoderms (class Echinoidea) that are usually enclosed in thin brittle globular tests covered with movable spines

Examples of sea urchin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Bring the family and experience an up- close and personal encounter with LEC’s sea urchins, sea stars, and sea cucumbers. Joe Rassel, The Orlando Sentinel, 2 Apr. 2025 Dishes include scallop and sea urchin cheung fun, truffle cha siu bao, steamed abalone, and duck and milk tea mooncake. Jonah Flicker, Robb Report, 1 Apr. 2025 In this case, these are animals like the purple sea urchin, a spiky purple pincushion that chows down enthusiastically on kelp. Byrd Pinkerton, Vox, 1 Apr. 2025 Otherwise, the rules were simple: slip into the zen robe and only leave the room for dinner at Hanabi, which will live rent-free in my mind forever thanks to chef Roberto Sanchez’s creamy, absurdly delicious cacio e pepe sea urchin udon. Jenn Rice, Forbes.com, 27 Mar. 2025 See All Example Sentences for sea urchin

Word History

First Known Use

1591, in the meaning defined above

Time Traveler
The first known use of sea urchin was in 1591

Browse Nearby Words

Cite this Entry

“Sea urchin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20urchin. Accessed 16 Apr. 2025.

Kids Definition

sea urchin

noun
: any of a class of small marine invertebrate animals that are echinoderms, usually live on or burrow in the sea bottom, and are enclosed in roundish shells covered with spines that can move

More from Merriam-Webster on sea urchin

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!