brachiosaur

noun

brach·​i·​o·​saur ˈbra-kē-ō-ˌsȯr 

: any of a genus (Brachiosaurus) of very large sauropod dinosaurs of the Late Jurassic period having a massive body, a very long neck, and forelegs longer than hind legs

Example Sentences

Recent Examples on the Web

From there, though, brachiosaurs started to shrink back. —Brian Switek, Scientific American Blog Network, 5 May 2017

Word History

Etymology

New Latin Brachiosaurs, from brachi- + Greek sauros lizard

First Known Use

1912, in the meaning defined above