APATOSAURUS Scrabble 13 Words With Friends 16 Definition noun huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic. — synonyms: apatosaur, brontosaur, brontosaurus, thunder_lizard, Apatosaurus_excelsus See all 268 words you can make from APATOSAURUS → 11-letter words Words starting with A Words ending with S ← Unscramble different letters