Wiktionary
n. (context biology English) Any of several massive, herbivorous sauropod dinosaurs, of the genus ''Brachiosaurus'', from the Jurassic and Cretaceous periods.
Usage examples of "brachiosaur".
I observe a brachiosaur, half-grown but already colossal, munching in the treetops.
The mournful snufflings of the huge brachiosaur carry clearly even in the heavy air.
And Bertha Brachiosaur is munching away in Ostrom Meadow, benignly supervising the whole scene.
Until at last, exhausted, I have come to rest here on this mossy carpet, and in the first light of dawn I see the giant form of the great brachiosaur standing like a mountain on the far side of Owen River.
The length of the upper arm bones compared to the thigh bones of camarasaurs is longer than that of the diplodocids, but less than that of the brachiosaurs and the cetiosaurs.
A herd of those Jurassic Park brachiosaurs could have waded by, completely at home.
These were not the mightiest herbivores -- that honor went to the giant, tree-cropping brachiosaurs, who could grow as massive as seventy tonnes -- but the brachiosaurs were solitary, or moved in small groups.