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
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The tasting menu runs through more than 20 dishes starring exquisite ingredients including caviar, wagyu, sea urchin and local ingredients from the Orlando market. Miami Herald, 20 Feb. 2025 In recent decades, seaweed has grown out of control thanks to a die-off of algae-eating animals, such as large sea urchins, and pollution. Benji Jones, Vox, 4 Feb. 2025 State of play: Sea otters are voracious predators of purple sea urchins. Kale Williams, Axios, 29 Jan. 2025 Its unique aesthetic — a round case covered in small beads that mimic the sea urchin’s natural form — served as the basis for a new series of Oursin that launched in white gold, rose gold, and yellow gold models. Paige Reddinger, Robb Report, 21 Jan. 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

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Cite this Entry

“Sea urchin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20urchin. Accessed 3 Mar. 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

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