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
It was later adopted in English to refer specifically to the small, shrimp-like marine crustaceans that whales and other sea animals feed on.
—
Erik Kain, Forbes.com, 4 Apr. 2025
The list also includes eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame.
may lead to a number of symptoms, including hives, rashes, swelling, vomiting, diarrhea, abdominal cramping, and coughing or wheezing.
—Martha McHardy, MSNBC Newsweek, 29 Mar. 2025
Blue whales — the planet’s largest animal — subsist on tiny crustaceans called krill.
—Bloomberg, The Mercury News, 18 Mar. 2025
The top food allergens include milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame.
—Corinne Savides Happel, Verywell Health, 5 Mar. 2025
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Erik Kain, Forbes.com, 4 Apr. 2025
The list also includes eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame.
may lead to a number of symptoms, including hives, rashes, swelling, vomiting, diarrhea, abdominal cramping, and coughing or wheezing.
—Martha McHardy, MSNBC Newsweek, 29 Mar. 2025
Blue whales — the planet’s largest animal — subsist on tiny crustaceans called krill.
—Bloomberg, The Mercury News, 18 Mar. 2025
The top food allergens include milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame.
—Corinne Savides Happel, Verywell Health, 5 Mar. 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 10 Apr. 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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