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 There was no pineapple at our lunch, but there were other delights (Grey turns out to be partial to sea urchin). Michael Paulson Dana Scruggs, New York Times, 15 May 2024 Sea otters kept herbivorous sea urchins in check; without the predators, urchins overgrazed and wiped out the entire suite of kelp-dependent species. Lesley Evans Ogden, Smithsonian Magazine, 9 May 2024 See all Example Sentences for sea urchin 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sea urchin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1591, in the meaning defined above

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

Dictionary Entries Near sea urchin

Cite this Entry

“Sea urchin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20urchin. Accessed 29 May. 2024.

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

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