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crustacean |
Also found in: Encyclopedia, Wikipedia | 0.09 sec. |
crustaceanOne of the class of arthropods that includes crabs, lobsters, shrimps, woodlice, and barnacles. The external skeleton is made of protein and chitin hardened with lime. Each segment bears a pair of appendages that may be modified as sensory feelers (antennae), as mouthparts, or as swimming, walking, or grasping structures. |
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