The story
From New Latin, from Ancient Greek roots; by surface analysis, bronto- + -saurus (“thunder lizard”), according to the notion that its massive size must have made its footsteps shake the ground.
Etymology from Wiktionary, CC BY-SA 4.0.
brontosaurus
Today it means: Any member of the genus †Brontosaurus of herbivorous sauropod dinosaurs with whip-like tails, which lived in present-day United States during the Late Jurassic period. Full definition →