hadrosaur

[ had-ruh-sawr ]

Phonetic (Standard)IPA

noun

a bipedal dinosaur of the genus Hadrosaurus, belonging to the ornithopod family Hadrosauridae of the late Cretaceous Period, having broad, flat jaws for scooping up water plants.

hadrosaur

/ ˌhædrəˈsɔːrəs; ˈhædrəˌsɔː /

noun

any one of a large group of bipedal Upper Cretaceous dinosaurs of the genus Anatosaurus , Maiasaura , Edmontosaurus , and related genera: partly aquatic, with a duck-billed skull and webbed feet Also calledduck-billed dinosaur

hadrosaur

/ hăd′rə-sôr′ /

Any of various medium-sized to large dinosaurs of the group Hadrosauroidea of the Cretaceous Period. Hadrosaurs had a duck-like bill and a mouth containing many series of rough grinding teeth for chewing tough plants. They walked on two legs or on all fours and had hoofed feet. Many hadrosaurs bore hollow crests on their skulls. They were the last and largest ornithopod dinosaurs.
Also called duck-billed dinosaur

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Other Words From

hadro·sauri·an adjective

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Word History and Origins

Origin of hadrosaur¹

< New Latin Hadrosaurus (1858) genus name, equivalent to Greek hadr ( ós ) thick, bulky + -o- -o- + saûros -saur

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Word History and Origins

Origin of hadrosaur¹

C19: from Greek hadros thick, fat + -saur

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Example Sentences

The remains, which fell from outcroppings of the Prince Creek Formation, represent seven dinosaur families including tyrannosaurs, duck-billed hadrosaurs and horned and frilled ceratopsids.

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