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Definition of allosaurus

allosaurus

/ˌæləˈsɔːrəs/
al · lo · sau · rus
Plural:allosauruses
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allosaurus Lexical Profile

allosaurus Game Scores & Validity

• noun

1

A large, bipedal, carnivorous theropod dinosaur of the Late Jurassic period, native primarily to North America, characterized by a massive skull equipped with serrated teeth, short forelimbs, and a heavy, counterbalancing tail.

Example

"The museum's centerpiece is a fully reconstructed skeleton of an allosaurus, which reigned as one of the apex predators of its ancient ecosystem."

Synonyms
View all synonyms for allosaurus

• Rhymes for allosaurus

• Nearby Words

alligator lizard
alligator snapping turtle
allium
allosaurus
allspice
almaty
almeria

Word Origin & Etymology

Coined in 1877 by paleontologist Othniel Charles Marsh from the Greek words 'allos' (different or other) and 'sauros' (lizard). It was named for its unique, concave vertebrae, which differed significantly from those of other dinosaurs known at the time.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Allosaurus. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/allosaurus
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