Definition of sea urchin
: any of numerous echinoderms (class Echinoidea) that are usually enclosed in thin brittle globular tests covered with movable spines
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Recent Examples of sea urchin from the Web
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The usually simple but luscious shrimp-and-pork lumpia eggrolls are punctuated with the additional toppings of luxuriant sea urchin.
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The novels are prickled like a sea urchin with the spines and fuzz of many indecencies.
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Fishermen in Alaska accuse the growing northern otter populations there of consuming the red sea urchin humans eat as sushi.
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Among the simpler dishes, a toothsome bucatini pasta with a golden cream sauce showed off the oceanic depth of sea urchin and crab.
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One great barometer of a sushi-ya's worth is its treatment of sea urchin.
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Its tanks hold about 140 species of fish and invertebrates from New England waters, including everything from haddock to sea urchins to blue lobsters.
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Scientific research has shown that both oxybenzone and octinoxate destroy coral by absorbing its nutrients, affecting coral-dependent marine life like sea urchins and algae.
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That affects coral, algae, sea urchins, algae eaters, all of them.
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.
First Known Use of sea urchin
1591
SEA URCHIN Defined for English Language Learners
sea urchin
Definition of sea urchin for English Language Learners
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: a small sea animal that lives on the ocean floor and is covered in sharp spines
SEA URCHIN Defined for Kids
sea urchin
Definition of sea urchin for Students
: 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
Learn More about sea urchin
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Spanish Central: Translation of sea urchin Nglish: Translation of sea urchin for Spanish speakers Britannica.com: Encyclopedia article about sea urchin
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