noncrustacean
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malacostracan — /mal euh kos treuh keuhn/, adj. 1. belonging or pertaining to the crustacean subclass Malacostraca, which includes the lobsters, shrimps, crabs, etc. n. 2. a malacostracan crustacean. [1825 35; < NL Malacostrac(a) order of crustacea ( < Gk, neut … Universalium
