hadrosaur

noun

had·​ro·​saur ˈha-drə-ˌsȯr 

: any of a genus (Hadrosaurus) or family (Hadrosauridae) of mainly bipedal dinosaurs of the Late Cretaceous that have the forward part of the jaws toothless and flattened into a beak-like snout and the back part of the jaws filled with rows of numerous small, grinding teeth and that often have a solid or hollow bony crest on the skull : duck-billed dinosaur

… the hadrosaurs evolved into some 21 different species during their 20 million-year stint on earth …

—Virginia Morell

Examples of hadrosaur in a Sentence

Recent Examples on the Web

The authors of a new study published Tuesday in the journal iScience believe the injuries occurred during mating — and they could be used to indicate which fossils belong to female hadrosaurs. — Ashley Strickland, CNN Money, 4 Nov. 2025

Edmontosaurs were probably pretty striking to look at with a long, low skull and one of the most prominent duck-bill snouts of any hadrosaur. — Andrew Paul, Popular Science, 23 Oct. 2025

The fossils show that the hadrosaur likely grew to be more than 35 feet long and weighed as much as 9 tons, according to the release. — Irene Wright, Miami Herald, 9 Oct. 2025

To find an answer, Brown turned to hadrosaurs such as Corythosaurus, plant-eaters from about 70 million years ago. — Rupendra Brahambhatt, Interesting Engineering, 14 Sep. 2025

Word History

Etymology

New Latin Hadrosaurus, genus name, from Greek hadros thick, bulky + sauros lizard

First Known Use

1877, in the meaning defined above

Rhymes for hadrosaur

• albacore
• alongshore
• antiwar
• anymore
• carnivore
• commodore
• dinosaur
• evermore
• furthermore
• guarantor
• herbivore
• heretofore