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.