crustacean(redirected from Malacostracology)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Any of various predominantly aquatic arthropods of the subphylum (or class) Crustacea, including lobsters, crabs, shrimps, and barnacles, characteristically having a segmented body, a chitinous exoskeleton, paired jointed limbs, and two pairs of antennae.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
crustaceana member of the class Crustacea in the phylum Arthropoda. The class includes shrimps, lobsters, crabs and water fleas. Most forms are aquatic, although a few are terrestrial, living in damp places, e.g. woodlice.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005