| malacostraca | (n) largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies, Syn. subclass Malacostraca |
| malacostracan crustacean | (n) a major subclass of crustaceans |
| Malacostraca | ‖prop. n. pl. [ NL., from Gr. |
| Malacostracan | n. (Zool.) One of the |