Hypertext Webster Gateway: "Malacostraca"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Malacostraca \Mal`a*cos"tra*ca\, n. pl. [NL., from Gr. ? soft +
? shell of a testacean.] (Zo["o]l.)
A subclass of Crustacea, including Arthrostraca and
Thoracostraca, or all those higher than the Entomostraca.
From WordNet (r) 1.7 (wn)
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: {Malacostraca}, {subclass Malacostraca}]
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