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

How The Decline In Cases Was Achieved The key to eradicating Guinea worm is providing access to clean water without the crustaceans. —Mark Kortepeter, Forbes, 10 Jan. 2025

The miniature crustacean has won hearts online, with the video going viral on social media. —Daniel R. Depetris, Newsweek, 10 Jan. 2025

The crustaceans seek out pieces of algae and tiny animals, then affix them to hook-like bristles on their shells. —Carlyn Kranking, Smithsonian Magazine, 10 Jan. 2025

The crustaceans produce a piquant aroma while the red vegetable adds a layer of acidity and hint of sourness to the soup. —Christina Liao, Vogue, 27 Dec. 2024

Word History

First Known Use

1835, in the meaning defined above

Kids 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