The hard upper shell of a turtle, crustacean, or arachnid.
- The hard carapace or upper shell of some sea turtles acts as a protection from predators.
- Some have distinctive markings on their heads and on their carapace, or upper shell.
- These genera have well-ornamented carapaces that exhibit carapace width and length ratios that differ from the other genera within the family.
Mid 19th century: from French, from Spanish carapacho, of unknown origin.
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