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


(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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The finds include saurapods, some of the largest land animals to have lived, and meateating allosaurs as well as ichthysaurs, dolphinlike creatures with eyes as big as dinner plates, and thousands of mollusk fossils known as Devil's Toenails.
When it lived 97 million years ago it was not at the top of the food chain as giant allosaurs were the apex predators.
Coelurosaurians include a group of theropod dinosaurs more closely related to birds than to other dinosaurs, including the allosaurs.
There was a time when 50,000-pound Barosaurs and predatory Allosaurs walked the region we now call Utah.
Cleveland Lloyd Quarry has yielded up a dinosaur egg, more than 15,000 dinosaur bones, and 44 Allosaurs. This site has produced more carnivore fossils than any other site in the world.