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1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Tho·ra·cos·tra·ca n. pl.  Zool. An extensive division of Crustacea, having a dorsal shield or carapec░ ░░niting all, or nearly all, of the thoracic somites to the head. It includes the crabs, lobsters, shrimps, and similar species.
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