Also found in: Thesaurus, Wikipedia.
Any of various large carnivorous theropod dinosaurs of the family Allosauridae of the Jurassic and Cretaceous Periods, having a massive head with narrow jaws, hands with large claws, and sturdy legs with clawed feet. Also called allosaur.
[From New Latin Allosauridae, family name, from Allosaurus, type genus; 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.