pterosaur

noun

ptero·​saur ˈter-ə-ˌsȯr How to pronounce pterosaur (audio)
: 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

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
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 Nagatitan would have lived with smaller plant-eating dinosaurs, including iguanodontians, some cousins of the Triceratops called ceratopsians, as well as large carnivores, and flying pterosaurs. Laura Baisas, Popular Science, 14 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

Browse Nearby Words

Cite this Entry

“Pterosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pterosaur. Accessed 1 Jun. 2026.

Kids Definition

pterosaur

noun
ptero·​saur ˈter-ə-ˌsȯ(ə)r How to pronounce pterosaur (audio)

More from Merriam-Webster on pterosaur

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster