apatosaur

1 definition found

apatosaur - WordNet (r) 2.1 (2005) :

  apatosaur
      n 1: huge quadrupedal herbivorous dinosaur common in North
           America in the late Jurassic [syn: apatosaur,
           apatosaurus, brontosaur, brontosaurus, thunder lizard
           , Apatosaurus excelsus]