from The Century Dictionary.

  • noun One of two main divisions of the Crustacea proper; the division which is contrasted with Entomostraca.

from the GNU version of the Collaborative International Dictionary of English.

  • proper noun plural (Zoöl.) A subclass of Crustacea, including Arthrostraca and Thoracostraca, or all those higher than the Entomostraca.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • proper noun A taxonomic class within the subphylum Crustacea — most crustacea - crabs, lobsters, shrimps etc., which have soft shells after moulting.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun largest subclass of Crustacea including most of the well-known marine, freshwater, and terrestrial crustaceans: crabs; lobsters; shrimps; sow bugs; beach flies


from Wiktionary, Creative Commons Attribution/Share-Alike License

From malaco- ("soft") + Ancient Greek ὄστρακον (ostrakon, "shell").


Help support Wordnik (and make this page ad-free) by adopting the word Malacostraca.



Log in or sign up to get involved in the conversation. It's quick and easy.