Definition of pterosaur
: any of an order (Pterosauria) of extinct flying reptiles existing from the Late Triassic throughout the Jurassic and most of the Cretaceous and having a featherless wing membrane extending from the side of the body along the arm to the end of the greatly elongated fourth digit
Recent Examples of pterosaur from the Web
The now extinct pterosaurs had them, as do bats and birds that are still alive today.
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Origin and Etymology of pterosaur
New Latin Pterosauria, from Greek pteron wing + sauros lizard
First Known Use: 1863See Words from the same year
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