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Definition of: patagium
(pə·tā′jē·əm) noun plural ·gi·a (-jē·ə)
1. Zool. The wing membrane of a bat; also, a parachute, as of a flying squirrel, and the membranous expansion of a bird's wing.
2. Entomol. One of two scalelike appendages on the front dorsal part of the thorax of some moths. [<NL <L, gold edging of a tunic <Gk. patageion]
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