BRONTOSAURUS Scrabble 14 Words With Friends 18 Definition noun huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic. — synonyms: apatosaur, apatosaurus, brontosaur, thunder_lizard, Apatosaurus_excelsus See all 470 words you can make from BRONTOSAURUS → 12-letter words Words starting with B Words ending with S ← Unscramble different letters