brontosaurus

play
noun bron·to·sau·rus \ˌbrän-tə-ˈsȯr-əs\
variants: or less commonly

brontosaur

play \ˈbrän-tə-ˌsȯr\

Definition of brontosaurus

  1. :  any of a genus (Apatosaurus) of very large sauropod dinosaurs of the Late Jurassic :  apatosaurus The name brontosaurus continues to be commonly used for these dinosaurs even though their former genus name (Brontosaurus) is considered invalid.

Origin and Etymology of brontosaurus

New Latin, from Greek brontē thunder + sauros lizard; akin to Greek bremein to roar


First Known Use: 1883


BRONTOSAURUS Defined for English Language Learners

brontosaurus

play
noun bron·to·sau·rus \ˌbrän-tə-ˈsȯr-əs\

Definition of brontosaurus for English Language Learners

  • : a very large dinosaur that had a long neck and tail


BRONTOSAURUS Defined for Kids

brontosaurus

play
noun bron·to·sau·rus \ˌbrän-tə-ˈsȯr-əs\

Definition of brontosaurus for Students

  1. :  a huge plant-eating dinosaur with a long neck and tail and four thick legs

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