a dinosaur of the genus Brachiosaurus, up to 30 metres long: the largest land animal ever known See also sauropod
The Book of the National Parks Robert Sterling Yard
brachiosaurus (brā’kē-ə-sôr’əs) or brachiosaur
A very large sauropod dinosaur of the genus Brachiosaurus of the Jurassic and Cretaceous Periods. It had forelegs that were longer than its hind legs, and nostrils on top of its head.
the curve between two points that in the shortest time by a body moving under an external force without friction; the curve of quickest descent. Historical Examples Great Astronomers R. S. Ball noun (maths) the curve between two points through which a body moves under the force of gravity in a shorter time than for […]