BRONTOSAUR Scrabble 12 Words With Friends 15 Definition noun huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic. — synonyms: apatosaur, apatosaurus, brontosaurus, thunder_lizard, Apatosaurus_excelsus See all 357 words you can make from BRONTOSAUR → 10-letter words Words starting with B Words ending with R ← Unscramble different letters