Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun apatosaur
1 sense of apatosaur
Sense 1
apatosaur, apatosaurus, brontosaur, brontosaurus, thunder lizard, Apatosaurus excelsus -- (huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic)
=> sauropod, sauropod dinosaur -- (very large herbivorous dinosaur of the Jurassic and Cretaceous having a small head a long neck and tail and five-toed limbs; largest known land animal)