stegosaur
noun
stego·saur
ˈste-gə-ˌsȯr 
: any of a suborder (Stegosauria) of quadrupedal ornithischian herbivorous dinosaurs chiefly of the Jurassic with strongly developed dorsal plates and spikes
Examples of stegosaur in a Sentence
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But the ankylosaurs outlasted the stegosaurs, thriving until an asteroid struck Earth 66 million years ago at the end of the Cretaceous Period, ending the age of dinosaurs.
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CNN Money, 28 Aug. 2025
Millions of years ago, bony osteoderms evolved into the famous armored plates and spines of stegosaurs and ankylosaurs, as Imma Perfetto reports for Cosmos.
—Margherita Bassi, Smithsonian Magazine, 22 July 2025
While every dinosaur fan has their own favorite prehistoric creature, the plant-eating stegosaurs is an extra cute option for four-legged friends.
—Mary Walrath-Holdridge, USA TODAY, 12 Oct. 2024
New research using supercomputers to simulate moon-on-moon violence suggests that Saturn’s rings formed when two ancient moons collided around the time that stegosaurs roamed the Earth.
—WIRED, 24 Dec. 2023
Bashanosaurus is just the latest stegosaur discovery at the Shaximiao Formation, something that may suggest these dinosaurs originated in Asia, said study coauthor Ning Li, a researcher at the Chongqing Laboratory of Geoheritage Protection and Research.
—Ashley Strickland, CNN, 3 Mar. 2022
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CNN Money, 28 Aug. 2025
Millions of years ago, bony osteoderms evolved into the famous armored plates and spines of stegosaurs and ankylosaurs, as Imma Perfetto reports for Cosmos.
—Margherita Bassi, Smithsonian Magazine, 22 July 2025
While every dinosaur fan has their own favorite prehistoric creature, the plant-eating stegosaurs is an extra cute option for four-legged friends.
—Mary Walrath-Holdridge, USA TODAY, 12 Oct. 2024
New research using supercomputers to simulate moon-on-moon violence suggests that Saturn’s rings formed when two ancient moons collided around the time that stegosaurs roamed the Earth.
—WIRED, 24 Dec. 2023
Bashanosaurus is just the latest stegosaur discovery at the Shaximiao Formation, something that may suggest these dinosaurs originated in Asia, said study coauthor Ning Li, a researcher at the Chongqing Laboratory of Geoheritage Protection and Research.
—Ashley Strickland, CNN, 3 Mar. 2022
Cite this Entry
“Stegosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stegosaur. Accessed 18 Sep. 2025.
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