Brontosaurus

n.

1.

(Paleon.) A genus of large sauropod American dinosaurs of the jurassic era, or an individual of that genus. A length of sixty feet is believed to have been attained by these reptiles. The genus is also called Apatosaurus, and individuals of the genus are also called brontosaurs.

Noun

1.

brontosaurus - huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic Synonyms: apatosaur, apatosaurus, Apatosaurus excelsus, brontosaur, thunder lizard

apatosaur, apatosaurus, Apatosaurus excelsus, brontosaur, genus Apatosaurus, genus Brontosaurus, sauropod, sauropod dinosaur, thunder lizard