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The Collaborative International Dictionary

Cheiropterygium

Cheiropterygium \Chei*rop`te*ryg"i*um\, n.; pl. Cheiropterygia. [NL., fr. Gr. chei`r hand + pte`ryx, pte`rygos wing, fin.] (Anat.) The typical pentadactyloid limb of the higher vertebrates.

Wiktionary

cheiropterygium

n. (context anatomy English) The typical pentadactyloid limb of the higher vertebrates.