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
Other Word Forms of Crustacean
Noun
Singular:
crustacean
Plural:
crustacea, crustaceansOrigin 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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