Brachiosaurus

American  

[bra-kee-uh-sawr-uhs] / ˌbræ ki əˈsɔr əs /

noun

1. Paleontology. a genus of dinosaurs with forelegs distinctively longer than its hind legs, among the largest of all known dinosaurs.

2. (brachiosaurus) a dinosaur of the genus Brachiosaurus; brachiosaur.

---

brachiosaurus British  

/ ˌbreɪkɪəˈsɔːrəs, ˌbræk- /

noun

1. a dinosaur of the genus Brachiosaurus , up to 30 metres long: the largest land animal ever known See also sauropod

---

brachiosaurus Scientific  

/ brā′kē-ə-sôr′əs /

1. 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.

---

Example Sentences

Imagine a baby Brachiosaurus no bigger than a golden retriever searching for plants alongside its siblings while trying to avoid predators eager for an easy meal.

From Science Daily • Feb. 27, 2026

Looking at Colossal’s wolves, I don’t even feel a “wow” moment like Ellie Sattler had spotting an InGen-made Brachiosaurus in Jurassic Park.

From Slate • Apr. 10, 2025

Bites were detected on sauropod bones belonging to Camarasaurus, Galeamopus and Suuwassea as well as bones probably but not definitively belonging to Diplodocus, Apatosaurus and Brachiosaurus.

From Reuters • Nov. 16, 2023

Which brings us back to the question that I found myself pondering when I came across Brachiosaurus at O'Hare.

From Scientific American • Mar. 29, 2013

After the first couple of hours of nothing, you stop waiting for somebody to yell “Eureka!” and haul a Brachiosaurus femur out of the dirt, holding it over their head like the Stanley Cup.

From "Linked" by Gordon Korman