crustacean

Meanings

1. 1
   noun

   an arthropod such as a crab, lobster, shrimp, or barnacle, usually with a hard shell

   A crab is a crustacean with a jointed body and hard shell.

2. 2
   adj

   relating to crustaceans

   The biologist studied crustacean larvae under the microscope.

From the taxonomic name Crustacea plus -an. Crustacea comes from Latin crusta, "shell, crust," pointing to the hard outer covering of many members of the group.

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