See Also: pterosaur(medicine)
pterosaur(dictionary)
pterosaur(encyclopedia)

pterosaur (iou)



pterosaur noun. M19.
[mod. Latin Pterosauria (see below), formed as PTERO-: see -SAUR.]
Any of numerous extinct reptiles of the Mesozoic order Pterosauria, having the fourth digit of each forelimb enormously prolonged to support a membrane for flight.
ptero'saurian adjective & noun (a) adjective of, pertaining to, or characteristic of a pterosaur; (b) noun a pterosaur: L19.