1) Apatosaur 2) Apatosaurus 3) Apatosaurus excelsus 4) Brontosaur 5) Dinosaur type 6) Sauropod 7) Sauropod dinosaur 8) Thunder lizard 9) Very large dinosaur 1) Apatosaur 2) Apatosaurus 3) Brontosaur 
• (n.) A genus of American jurassic dinosaurs. A length of sixty feet is believed to have been attained by these reptiles.
(pronounced BRON-to-SAWR-us) Brontosaurus meaning thunder lizard) is an obsolete name for Apatosaurus, a hugesauropod from the Jurassic period . 
Bron`to·sau'rus noun [ New Latin , from Greek ... thunder + ... lizard.] (Paleon.) A genus of American jurassic dinosaurs. A length of sixty feet is believed to have been attained by these reptiles. 
Brontosaurus, brontosaur This \'thunder lizard\' nomenclature is no longer recognized by scientists because they found that it described an animal that was previously given another name which is Apatosaurus.
Former name of a type of large, plant-eating dinosaur, now better known as apatosaurus
brontosaur.