apatosaur

Noun apatosaur has 1 sense

• apatosaur(n = noun.animal) apatosaurus, apatosaurus excelsus, brontosaur, brontosaurus, thunder lizard - huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic;
is a kind of sauropod, sauropod dinosaur
is a member of genus apatosaurus, genus brontosaurus