Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: brontosaur  'brón-tu,sor
  1. Huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
    - apatosaur, apatosaurus, brontosaurus, thunder lizard, Apatosaurus excelsus

Derived forms: brontosaurs

Type of: sauropod, sauropod dinosaur

Part of: genus Apatosaurus, genus Brontosaurus

Encyclopedia: Brontosaur