Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of various massive, herbivorous sauropod dinosaurs of the genus Brachiosaurus of the Jurassic and Cretaceous Periods, having a long flexible neck, nostrils above the eyes, and forelegs that were much longer than the hind legs.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of several massive, herbivorous sauropod dinosaurs, of the genus Brachiosaurus, from the Jurassic and Cretaceous periods.

Etymologies

New Latin Brāchiosaurus, genus name : Latin brācchium, arm; see brachium + Greek sauros, lizard.
(American Heritage® Dictionary of the English Language, Fourth Edition)

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