noun crus·ta·cean \ˌkrəs-ˈtā-shən\

: 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

Full 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, shrimps, crabs, wood lice, water fleas, and barnacles
crustacean adjective

First Known Use of CRUSTACEAN

CRUSTACEANS Defined for Kids


noun crus·ta·cean \ˌkrəs-ˈtā-shən\

Definition of CRUSTACEAN for Kids

:  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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