Also found in: Thesaurus, Encyclopedia, Wikipedia.



[New Latin Allosaurus, genus name; see allosaurus.]


(ˈæləˌsɔː) or


(Palaeontology) any large carnivorous bipedal dinosaur of the genus Antrodemus (formerly Allosaurus), common in North America in late Jurassic times: suborder Theropoda (theropods)
[C19: from allo- + -saur]


(ˈæl əˌsɔr)

any carnivorous theropod dinosaur of the genus Antrodemus (formerly Allosaurus), from the late Jurassic Period of North America.
[< New Latin Allosaurus (1877). See allo-, -saur]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.allosaur - late Jurassic carnivorous dinosaurallosaur - late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus
bird-footed dinosaur, theropod, theropod dinosaur - any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs
genus Allosaurus, genus Antrodemus - carnivorous dinosaur of North America; late Jurassic
References in periodicals archive ?
Notable species of the dinosaur fauna included: a larger predatory allosaur, Vulconadon karibaensis; a giant sauropod, Brachiosaurus sp.
Today, at the Visitor Center you can see a complete Allosaur skeletal reconstruction and a Stegosaur wall mount.
An allosaur attack would have been as harmless as "a bunch of hyenas trying to attack an elephant.
There's also a very special star - the allosaur from last Christmas's The Ballad of Big Al as well as a plethora of other weird and wonderful creatures, including hybrid humanmonkey characters and an entelodont - all brought to life by the animators who created Walking with Dinosaurs.