C19: from New Latin, from Greek brontē thunder + sauros lizard
apatosaurus in British English
(əˌpætəˈsɔːrəs)
noun
any very large herbivorous quadrupedal dinosaur of the genus Apatosaurus, common in North America during Jurassic times, having a long neck and long tail: suborder Sauropoda (sauropods)
Formerly called: brontosaurus
Word origin
C19: from New Latin, from Greek apatē deceit + sauros lizard