Origin of crustaceanModern Latin Crustacea from crustaceus, having a crust or shell from Classical Latin crusta, crust
The definition of a crustacean is an arthropod with a hard outer shell and jointed limbs that usually lives in aquatic environments.
A lobster is an example of a crustacean.
any of a subphylum (Crustacea) of arthropods, including shrimps, crabs, barnacles, and lobsters, that usually live in the water and breathe through gills: they have a hard outer shell and jointed appendages
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.
Origin of crustaceanFrom New Latin Crūstācea class name neuter pl. of crūstāceus hard-shelled from Latin crusta shell ; see kreus- in Indo-European roots.
(plural crustaceans or crustacea)
- It is then, if lucky, eaten by some crustacean, or insect, more rarely by a fish.
- The most aberrant type of larva is that of the genus Prosopistoma, which was originally described as an entomostracous crustacean on account of the presence of a large carapace overlapping the greater part of the body.
- No Crustacean exhibits this trilobite form.
- The cercaria swims freely for a time and either encysts directly on grass or weeds or it enters a second host which may be another mollusc, an insect, crustacean or fish, and then encysts.
- The equivalent terms applied by Sars are Anostraca, Notostraca, Conchostraca, involving a termination already appropriated to higher divisions of the Crustacean class, for which it ought to be reserved.