crus·​ta·​cean | \ ˌkrə-ˈstā-shən How to pronounce crustacean (audio) \

Definition of crustacean

: any of a large class (Crustacea) of mostly aquatic mandibulate arthropods that have a chitinous or calcareous and chitinous exoskeleton, a pair of often much modified appendages on each segment, and two pairs of antennae and that include the lobsters, shrimp, crabs, wood lice, water fleas, and barnacles

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Other Words from crustacean

crustacean adjective

Examples of crustacean in a Sentence

Recent Examples on the Web Disgust at their grisly trade, which was eradicating millions of birds a year to meet Americans’ demand for feathery swank, surged in her like a ball of regurgitated feathers and crustaceans from a grebe’s crop. The Economist, "Lexington Companies can now get away with killing America’s birds," 20 Feb. 2020 Cusk eels like to eat amphipods, white prawn-like crustaceans that populate the trenches in large numbers. Susan Casey, Outside Online, "One Man's Wild Quest to Reach the Bottom of Every Ocean," 22 Oct. 2019 Temperatures like that melt the continent's stocks of ice, and tiny crustaceans called krill are already struggling to find food. Alex Baker-whitcomb, Wired, "New Samsung Phones, Record Heat in Antarctica, and More News," 11 Feb. 2020 The concern now is that global warming seems to be shifting where krill, the tiny crustaceans that are the humpback's main food, live. Elizabeth Weise, USA TODAY, "For once, good environment news: A humpback whale population has come back from the brink," 8 Oct. 2019 These tiny crustaceans form the base of the food web and their displacement trickled up the food chain, from herring to salmon to whales and seabirds and pinnipeds. oregonlive, "Climate change and the ocean: What the latest UN report means for the Oregon coast," 25 Sep. 2019 The two most common borers are a kind of shipworm called Teredo navalis, which is actually a wormlike clam, and tiny crustaceans known as gribbles. New York Times, "The Critters Doing $114 Million in Damage to Brooklyn’s Piers," 13 Sep. 2019 The underbelly of the ice teems with zooplankton -- tiny crustaceans that feed on the phytoplankton. Arwa Damon, CNN, "Arctic melt: Threat beneath the ice," 8 June 2019 The structure rises and falls with the 8-foot tides and never tilts more than 11 inches, even in winds topping 70 mph or if the herd crowds the stern to watch passing crustaceans. Laura Mallonee, Wired, "Floating Farms May Help Reinvent the World's Food Ecosystems," 18 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crustacean.' 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 crustacean

1835, in the meaning defined above

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Time Traveler for crustacean

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The first known use of crustacean was in 1835

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Statistics for crustacean

Last Updated

20 Mar 2020

Cite this Entry

“Crustacean.” Dictionary, Merriam-Webster, Accessed 29 Mar. 2020.

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How to pronounce crustacean (audio)

English Language Learners Definition of crustacean

technical : a type of animal (such as a crab or lobster) that has several pairs of legs and a body made up of sections that are covered in a hard outer shell


crus·​ta·​cean | \ ˌkrəs-ˈtā-shən How to pronounce crustacean (audio) \

Kids Definition of crustacean

: any of a large group of mostly water animals (as crabs, lobsters, and shrimps) with a body made of segments, a tough outer shell, two pairs of antennae, and limbs that are jointed

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More from Merriam-Webster on crustacean

Rhyming Dictionary: Words that rhyme with crustacean

Spanish Central: Translation of crustacean

Nglish: Translation of crustacean for Spanish Speakers

Britannica English: Translation of crustacean for Arabic Speakers Encyclopedia article about crustacean

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