brach·​i·​o·​saur ˈbra-kē-ō-ˌsȯr How to pronounce brachiosaur (audio)
: 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

Examples of brachiosaur in a Sentence

Recent Examples on the Web From there, though, brachiosaurs started to shrink back. Brian Switek, Scientific American Blog Network, 5 May 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'brachiosaur.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin Brachiosaurs, from brachi- + Greek sauros lizard

First Known Use

1912, in the meaning defined above

Time Traveler
The first known use of brachiosaur was in 1912

Dictionary Entries Near brachiosaur

Cite this Entry

“Brachiosaur.” Dictionary, Merriam-Webster, Accessed 18 Jun. 2024.

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