| 单词 | malacostracan | 
| 释义 | Word Frequency malacostracan(ˌmæləˈkɒstrəkən) noun 1.  any crustacean of the subclass or group Malacostraca, including lobsters, crabs, woodlice, sand hoppers, and opossum shrimps  adjective  also: malacostracous 2.  of, relating to, or belonging to the Malacostraca Word originC19: from New Latin, from Greek malakōstrakos, from malaco- + ostrakon shell | 
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