brontosaur

US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈbrɑntəˌsɔr/ ,USA pronunciation: respelling(bron′tə sôr′)


WordReference Random House Learner's Dictionary of American English © 2025
bron•to•saur /ˈbrɑntəˌsɔr/USA pronunciation   n. [countable]
  1. Paleontologya huge, four-footed, plant-eating dinosaur.

WordReference Random House Unabridged Dictionary of American English © 2025
bron•to•saur  (bron′tə sôr′),USA pronunciation n. 
  1. Paleontologya huge sauropod dinosaur of the genus Apatosaurus (formerly Brontosaurus) and closely related genera, of the Jurassic Period, having a massive body, a small head and long neck, and thick columnar limbs, and ranging up to 77 ft. (23.5 m) in length.
  • see brontosaurus

WordReference Random House Unabridged Dictionary of American English © 2025
bron•to•sau•rus  (bron′tə sôr′əs),USA pronunciation n., pl. -sau•rus•es, -sau•ri 
    (-sôr′ī).USA pronunciation 
  1. Paleontologybrontosaur.
  • Neo-Latin (1879), equivalent. to Greek bronto- (combining form of bronté̄ thunder) + saûros -saurus

Collins Concise English Dictionary © HarperCollins Publishers::
brontosaurus / ˌbrɒntəˈsɔːrəs/, brontosaur / ˈbrɒntəˌsɔː/
  1. a former name for apatosaurus
Etymology: 19th Century: from New Latin, from Greek brontē thunder + sauros lizard
'brontosaur' also found in these entries (note: many are not synonyms or translations):
brontosaurus

Forum discussions with the word(s) "brontosaur" in the title:


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