Malacostraca
Pronunciation : Mal`a*cos"tra*ca
Part of Speech : n.
Etymology : [NL., from Gr. (Zo?l.)
Definition : Defn: A subclass of Crustacea, including Arthrostraca and Thoracostraca, or all those higher than the Entomostraca.
pl.
Source : Webster's Unabridged Dictionary, 1913