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
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Intriguingly, if not mysteriously, the Solnhofen Limestones of southern Germany only hold young pterosaur fossils. Maria Mocerino, Interesting Engineering, 6 Sep. 2025 Recently, the zoo introduced a Dinosaur Safari with life-size animatronic dinosaurs and pterosaurs. Michele Herrmann, Forbes.com, 15 Aug. 2025 There was a pterosaur found preserved in its stomach and there were iguanodon remains found in the maw of a Baryonyx, another large carnivore belonging to the same lineage as the Spinosaurus. Beth Mole, ArsTechnica, 8 Aug. 2025 We’re stuck with it, though, so might as well go with the pterosaur flow. Saman Shafiq, USA Today, 5 Aug. 2025 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 9 Sep. 2025.

Kids Definition

pterosaur

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

More from Merriam-Webster on pterosaur

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