had·ro·saur·us

(hăd′rə-sôr′əs)

A hadrosaurid dinosaur of the genus Hadrosaurus, having a bulky body and no crest on the head. A hadrosaurus fossil found in New Jersey (1858) was the first nearly complete dinosaur skeleton excavated in the United States. Also called hadrosaur.

[New Latin Hadrosaurus, genus name : Greek hadros, thick; see hadron + sauros, lizard.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

hadrosaurus - any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic

duck-billed dinosaur, hadrosaur

ornithischian, ornithischian dinosaur - herbivorous dinosaur with a pelvis like that of a bird

family Hadrosauridae, Hadrosauridae - duck-billed dinosaurs; upper Cretaceous

anatotitan - one of the largest and most famous duck-billed dinosaurs

corythosaur, corythosaurus - duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet

edmontosaurus - duck-billed dinosaur from Canada found as a fossilized mummy with skin

trachodon, trachodont - large duck-billed dinosaur of the Cretaceous period

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References in periodicals archive

After some two weeks they found that what had been the discovery of a buried stone scullery, a common enough finding in New England, had led fortuitously to the uncovering of a fossil, the coccyx of a hadrosaurus. The Paleontological Association was having a fit.

Spanish Cathedrals

Leidy is perhaps best remembered now for two studies: the naming of Hadrosaurus foulkii in 1858 from a specimen found in New Jersey (p.

The Legacy of the Mastodon: The Golden Age of Fossils in America

was that of a Hadrosaurus. While on vacation in Haddonfield, New Jersey, in 1858, amateur geologist William Parker Foulke heard that workers had found a giant bone 20 years earlier.

Teen dinosaur hunter: Students scour the desert for prehistoric fossils to display in their school's museum

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