Cirripedia (?), n. pl. [NL., fr. L. cirrus curl + pes, pedis, foot.] (Zoöl.) An order of Crustacea including the barnacles. When adult, they have a calcareous shell composed of several pieces. From the opening of the shell the animal throws out a group of curved legs, looking like a delicate curl, whence the name of the group. See Anatifa.
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