patagium

noun pa·ta·gi·um \pə-ˈtā-jē-əm\

plural -gia \-jē-ə\

Definition of PATAGIUM

: the fold of skin connecting the forelimbs and hind limbs of some tetrapods (as flying squirrels)

: the fold of skin in front of the main segments of a bird's wing

New Latin, from Latin, gold edging on a tunic

First Known Use: 1826

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