carapace(redirected from Carapax)
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Zoology A hard bony or chitinous outer covering, such as the fused dorsal plates of a turtle or the portion of the exoskeleton covering the head and thorax of a crustacean.
Etymology: Sp, carapacho, hard shell
a horny shield or shell covering the dorsal surface of an animal such as a turtle.
carapacethe part of the exoskeleton of a CRUSTACEAN that spreads over the head and thorax; in other animals, e.g. the tortoise, the carapace is the dorsal covering of bony plates.
the dorsal shell of turtles and tortoises. Abnormalities are caused by trauma, dietary deficiencies (particularly nutritional hyperparathyroidism), infections, environmental factors and tumors.