Crustacean Definition

krŭ-stāshən
crustaceans
noun
crustaceans
Any of a subphylum (Crustacea) of arthropods, including shrimps, crabs, barnacles, and lobsters, that usually live in the water and breathe through gills: they have a hard outer shell and jointed appendages.
Webster's New World
adjective
Of crustaceans.
Webster's New World
Synonyms:

Other Word Forms of Crustacean

Noun

Singular:
crustacean
Plural:
crustacea, crustaceans

Origin of Crustacean

  • From New Latin Crūstācea class name neuter pl. of crūstāceus hard-shelled from Latin crusta shell kreus- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

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crustacean