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brittle star

noun

: any of a class or subclass (Ophiuroidea) of echinoderms that have slender flexible arms distinct from the central disk

Examples of brittle star in a Sentence

Recent Examples on the Web
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One young explorer lifted a delicate brittle star briefly from the water to the joyful oohs and aahs of curious onlookers. Ernie Cowan, San Diego Union-Tribune, 23 Nov. 2025 The researchers’ analysis showed that the brittle stars that were collected from the deep sea shared more DNA across regions than the brittle stars that were collected from the shallows. Sam Walters, Discover Magazine, 24 July 2025 See the new species Off the coast of Taiwan, a new species of brittle star, Breviturma securis, was discovered. Miami Herald, 13 June 2025 Enlarge / The brooding brittle star (Amphipholis squamata) was likely the result of multiple hybridization events. Richard Pallardy, Ars Technica, 30 July 2024 Environmental scientists worry that harvesting nodules will send up plumes of sediment into the water and kill anything living on the seafloor, such as brittle stars and bizarre sea cucumber species like the one known as the gummy squirrel. Danielle Chemtob, Forbes, 27 Mar. 2024

Word History

First Known Use

1841, in the meaning defined above

Time Traveler
The first known use of brittle star was in 1841

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Cite this Entry

“Brittle star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brittle%20star. Accessed 5 Dec. 2025.

Kids Definition

brittle star

noun
: any of a group of sea animals similar to the related starfishes but having slender flexible arms

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