: 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

Examples of pterosaur in a Sentence

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As paleontologists explain in a study published in the journal Gondwana Research, the massive ichthyosaur who made a meal of the pterosaur soon became a snack for a gigantic apex predator that swam the inland Eromanga Sea over 100 million years ago. Andrew Paul, Popular Science, 29 July 2026 Nagatitan lived alongside various other dinosaurs as well as flying reptiles called pterosaurs. Reuters, NBC news, 15 May 2026 Flying reptiles called pterosaurs would've also eaten fish from the river. Michelle Del Rey, USA Today, 15 May 2026 Towering over walkways and soaring overhead, a life-size cast of prehistoric giants will take over the grounds — from a pterosaur perched for flight to a sprawling brontosaurus and a fearsome Tyrannosaurus rex. Eva Remijan-Toba, Chicago Tribune, 24 Mar. 2026 See All Example Sentences for pterosaur

Word History

Etymology

New Latin Pterosauria, from Greek pteron wing + sauros lizard

First Known Use

1863, in the meaning defined above

Time Traveler
The first known use of pterosaur was in 1863

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Cite this Entry

“Pterosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pterosaur. Accessed 14 Aug. 2026.

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