crustacean Meaning, Definition & Usage
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noun any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
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adjective of or belonging to the class Crustacea
crustaceous.
WordNet
Crus*ta"cean adjective
Definitions
(Zoöl.) Of or pertaining to the Crustacea; crustaceous. --n. An animal belonging to the class Crustacea .