Found 2 items, similar to Apatosaurus.
English → English (WordNet) Definition: apatosaurus apatosaurus n : huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic [syn: apatosaur, brontosaur, brontosaurus, thunder lizard, Apatosaurus excelsus]
English → English (gcide) Definition: Apatosaurus Apatosaurus \Apatosaurus\ n. 1. 1 a genus of extinct dinosaurs comprising the brontosaurs; apatosaurs. Syn: genus Apatosaurus. [WordNet 1.5] Brontosaurus \Bron`to*sau"rus\, n. [NL., fr. Gr. bronth` thunder + say^ros lizard.] (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. [1913 Webster +PJC] ||