| costra |
| 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 |
| Malacostracology | n. [ Malacostracan + -logy. ] That branch of Zoological science which relates to the crustaceans; -- called also |
| Malacostracous | a. (Zool.) Belonging to the Malacostraca. [ 1913 Webster ] |
| Thoracostraca | ‖n. pl. [ NL. See Thorax, and Ostracoid, a. ] (Zool.) An extensive division of Crustacea, having a dorsal shield or carapec&unr_; &unr_;&unr_;niting all, or nearly all, of the thoracic somites to the head. It includes the crabs, lobsters, shrimps, and similar species. [ 1913 Webster ] |