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brontosaur

[ bron-tuh-sawr ]
/ ˈbrɒn təˌsɔr /
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noun

a huge sauropod dinosaur of the genus Apatosaurus (formerly Brontosaurus) and closely related genera, of the Jurassic Period, having a massive body, a small head and long neck, and thick columnar limbs, and ranging up to 77 feet (23.5 meters) in length.

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Origin of brontosaur

see origin at brontosaurus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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