Dictionary

crustacea

crustacea

noun plural crus·ta·cea \ˌkrəs-ˈtā-sh(ē-)ə\

Definition of CRUSTACEA

:  arthropods that are crustaceans

Origin of CRUSTACEA

New Latin, group name, from neuter plural of crustaceus
First Known Use: 1814

crustacea

noun plural crus·ta·cea \ˌkrəs-ˈtā-sh(ē-)ə\   (Medical Dictionary)

Medical Definition of CRUSTACEA

1
capitalized :  a large class of mostly aquatic 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
2
:  arthropods of the class Crustacea
crus·ta·cean \-shən\ adjective or noun

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