Definition of hadrosaur
: 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
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Recent Examples of hadrosaur from the Web
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Tyrannosaurs, hadrosaurs, ankylosaurs, ostrich mimic dinosaurs and more have turned up, but no horned dinosaurs.
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Tyrannosaurs, hadrosaurs, ankylosaurs, ostrich mimic dinosaurs and more have turned up, but no horned dinosaurs.
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Tyrannosaurs, hadrosaurs, ankylosaurs, ostrich mimic dinosaurs and more have turned up, but no horned dinosaurs.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hadrosaur.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of hadrosaur
New Latin Hadrosaurus, genus name, from Greek hadros thick, bulky + sauros lizard
Learn More about hadrosaur
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See words that rhyme with hadrosaur Britannica.com: Encyclopedia article about hadrosaur
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