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.
We’re stuck with it, though, so might as well go with the pterosaur flow. Saman Shafiq, USA Today, 28 Oct. 2025 Its hooves are an example of a phenomenon called convergent evolution in which disparate organisms independently evolve similar features — like the wings of birds, bats and the extinct flying reptiles called pterosaurs — while adapting to similar environments or ecological niches. Reuters, NBC news, 24 Oct. 2025 The bone was enough to identify the pterosaur as belonging to the Azhdarchidae group, the same group as Quetzalcoatlus. Irene Wright, Miami Herald, 21 Oct. 2025 There are also many examples of specimens ranging from young to adult pterosaurs, as expected of a local population, Smyth said. Ashley Strickland, CNN Money, 19 Sep. 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 10 Nov. 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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