sea urchin


Definition of sea urchin

: 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 New Yorkers associate the Japanese island of Hokkaido with excellent sea urchin. New York Times, "17 Restaurants Where New Yorkers Can Make Up for Lost Time," 20 Apr. 2021 Colors include quartz, sand, toffee, clay, sea urchin and pinot, which makes the pieces easy to mix and match. Krystin Arneson, CNN Underscored, "Size-inclusive label Summersalt just launched intimates," 12 Mar. 2021 Factors like warming waters, sea urchin populations and over-harvesting for commercial uses are all possible threats to kelp beds, Costa said. Rochelle Baker, Wired, "A New Project Maps the Pacific Coast's Critical Kelp Forests," 23 Jan. 2021 This holiday season, Bay Area cooks can turn to a new kind of fishmonger for access to some of California’s best seafood, including abalone, spiny lobster and live sea urchin. Georgia Freedman,, "Some of California’s hardest-to-find seafood is arriving in the Bay Area. Here’s how to get it," 13 Dec. 2020 This weekend’s menu has Otoro (a type of fatty tuna) and Hokkaido Uni (sea urchin) as well as vegan and vegetarian options. Anna Caplan, Dallas News, "Former Uchi chef’s eye-popping sushi is the star at a new Grand Prairie restaurant," 19 Dec. 2020 This shield-like coating is made of calcite with high levels of magnesium, a type found only in one other biological structure: sea urchin teeth, which can grind limestone. National Geographic, "Leaf-cutter ants have rocky crystal armor, never before seen in insects," 25 Nov. 2020 Where to Eat: Located on the main waterfront drag with a terrace overlooking the busy port, upmarket Acquapazza serves up dishes like spaghetti with sea urchin, swordfish, and lobster. Nicky Swallow, Travel + Leisure, "10 Secret Islands in Italy That Have All of the Beauty and None of the Tourists," 11 Nov. 2020 Since the 1980s and ’90s, Doherty said the bulk of the sea urchin beds have been wiped out by sea otters. Anchorage Daily News, "Loan program lets 8 young Alaska fishermen obtain quota shares," 13 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sea urchin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sea urchin

1591, in the meaning defined above

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Time Traveler for sea urchin

Time Traveler

The first known use of sea urchin was in 1591

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Statistics for sea urchin

Last Updated

25 Apr 2021

Cite this Entry

“Sea urchin.” Dictionary, Merriam-Webster, Accessed 6 May. 2021.

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More Definitions for sea urchin

sea urchin


English Language Learners Definition of sea urchin

: a small sea animal that lives on the ocean floor and is covered in sharp spines

sea urchin


Kids Definition of sea urchin

: a small sea animal that is related to the starfish, lives on the sea bottom, and is enclosed in a roundish shell covered with spines that can move

More from Merriam-Webster on sea urchin

Nglish: Translation of sea urchin for Spanish Speakers Encyclopedia article about sea urchin

Comments on sea urchin

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