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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.

Synonyms
View all synonyms for allosaurus

• Rhymes for allosaurus

• Nearby Words

allocate
allocation
allocator
allosaurus
allot
allotment
allover

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 Nov 5, 2026, from https://wordmom.com/dictionary/allosaurus
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