crustacean
noun
crus·ta·cean
ˌkrə-ˈstā-shən 
: 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
crustacean
adjective
Examples of crustacean in a Sentence
Recent Examples on the Web
The itinerary also took guests behind the scenes of one of Spain’s largest fish markets where a rich bounty of anchovies, crustaceans, and other seafood is delivered daily.
—
Rana Good, Forbes.com, 26 June 2025
The others are eggs, fish, crustacean shellfish, tree nuts, peanuts, sesame and soybeans.
—Matthew Robinson, MSNBC Newsweek, 26 June 2025
By creating a kind of prehistoric food web, the researchers placed animals like sea bream (which eat mussels and crustaceans) at the bottom, followed by smaller sharks and extinct toothed whales the size of modern dolphins.
—Melissa Cristina Márquez, Forbes.com, 11 June 2025
Kevin Dietsch/Getty Images There are nine major allergens, including soybeans, wheat, sesame, milk, eggs, fish, crustacean shellfish, tree nuts and peanuts.
—Marni Rose McFall, MSNBC Newsweek, 10 June 2025
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Rana Good, Forbes.com, 26 June 2025
The others are eggs, fish, crustacean shellfish, tree nuts, peanuts, sesame and soybeans.
—Matthew Robinson, MSNBC Newsweek, 26 June 2025
By creating a kind of prehistoric food web, the researchers placed animals like sea bream (which eat mussels and crustaceans) at the bottom, followed by smaller sharks and extinct toothed whales the size of modern dolphins.
—Melissa Cristina Márquez, Forbes.com, 11 June 2025
Kevin Dietsch/Getty Images There are nine major allergens, including soybeans, wheat, sesame, milk, eggs, fish, crustacean shellfish, tree nuts and peanuts.
—Marni Rose McFall, MSNBC Newsweek, 10 June 2025
See All Example Sentences for crustacean
Cite this Entry
“Crustacean.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/crustacean. Accessed 4 Jul. 2025.
Copy CitationKids Definition
crustacean
noun
crus·ta·cean
ˌkrəs-ˈtā-shən
: any of a large class of mostly water-dwelling arthropods (as lobsters, shrimps, crabs, wood lice, water fleas, and barnacles) having an exoskeleton of chitin or chitin and a compound of calcium
crustacean
adjective
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