Dictionary
bron•to•saur
Pronunciation: (bron'tu-sôr"), [key]—
n.
a 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.