| malacostraca | <zoology> A subclass of Crustacea, including Arthrostraca and Thoracostraca, or all those higher than the Entomostraca. Origin: NL, from Gr. Soft + shell of a testacean. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| malacostracan | <zoology> One of the Malacostraca. Source: Websters Dictionary (01 Mar 1998) |