brontosaurus Meaning, Definition & Usage

  1. noun huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic
    brontosaur; Apatosaurus excelsus; thunder lizard; apatosaurus; apatosaur.

WordNet


Bron`to*sau"rus noun
Etymology
NL., fr. Gr. thunder + lizard.
Definitions
  1. (Paleon.) A genus of American jurassic dinosaurs. A length of sixty feet is believed to have been attained by these reptiles.

Webster 1913