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• allosaurus
  allosaurus

  noun

  allosaur.
• Allosaurus
  Allosaurus

  noun

  the genus Antrodemus.

allosaurus

¹ American  

[al-uh-sawr-uhs] / ˌæl əˈsɔr əs /

noun

allosauruses plural

1. allosaur.

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Allosaurus ² American  

[al-uh-sawr-uhs] / ˌæl əˈsɔr əs /

noun

1. Older Use. the genus Antrodemus.

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allosaurus Scientific  

/ ăl′ə-sôr′əs /

1. Any of various carnivorous dinosaurs of the genus Allosaurus of the late Jurassic and early Cretaceous Periods. Allosaurs were similar to but smaller than tyrannosaurs.

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Other Word Forms

Derived Forms

• allosauroid
  adjective

Inflected Forms

Nouns

• allosauruses
  plural

Example Sentences

See Examples For:

allosaurus Allosaurus allosauruses

But their study further supports their theory that sauropod carrion played a significant role in feeding the dinosaur kingdom, and that allosaurus were in fact cannibals.

From Salon ● Nov. 2, 2023

It’s mounted in the Dinosaur Hall alongside the bones of an allosaurus, a contemporary predator.

From Los Angeles Times ● Aug. 19, 2022

Gualicho shinyae belongs to a different type of dinosaurs called allosaurus, which scientists previously saw with strong, full-sized arms.

From Time ● Jul. 14, 2016

A fossilised allosaurus skeleton went under the hammer today at Summers Place Auctions in West Sussex.

From The Guardian ● Nov. 25, 2015

As in a fantastic dream Nelson watched one of the armored guardians unsnap the hook of the powerful chain by which his allosaurus was secured.

From Astounding Stories, February, 1931 by Bates, Harry

"Life was cheap in this ecosystem and the lives of predators such as the Allosaurus were likely fueled by the consumption of these baby sauropods."

From Science Daily ● Feb. 1, 2026

In terms of fossils, the Stegosaurus has around 144 bone elements; the adult Allosaurus has about 143, with the juvenile version having 135.

From BBC ● Dec. 12, 2024

"If you're an Allosaurus, the vast majority of the sauropods you ever encounter will be young ones, and for the first few years of their lives they will be almost defenseless," Wedel added.

From Reuters ● Nov. 16, 2023

Paleontologists have found these air sacs in flying reptiles called pterosaurs, in theropod dinosaurs such as Allosaurus, and in long-necked dinosaurs, including Diplodocus.

From Scientific American ● Mar. 31, 2023

They were dense black, hard and uncrushed, even better preserved and somewhat more complete than the two fine skeletons of Allosaurus from Bone-Cabin Quarry, the greatest treasures that this famous quarry had supplied.

From Dinosaurs With Special Reference to the American Museum Collections by Osborn, Henry Fairfield

“Some of these dinosaurs were the largest dinosaurs that ever lived. Just based on the calories alone, one dead sauropod would have enough calories to feed 20 or 30 allosauruses for several months.”

From Salon ● Nov. 2, 2023

“Recent papers about allosaurus cannibalism are pretty interesting because it means, I think, they did not care if they were scavenging sauropods or anything, even other allosauruses, they were fine with it,” he said.

From Salon ● Nov. 2, 2023

Beneath Utah’s surface, there’s a rich cache of dinosaur fossils, revealing details about prehistoric animals such as carnivorous allosauruses and spine-backed stegosauruses.

From National Geographic ● Oct. 19, 2023