bron·​to·​sau·​rus | \ ˌbrän-tə-ˈsȯr-əs How to pronounce brontosaurus (audio) \
variants: or less commonly brontosaur \ ˈbrän-​tə-​ˌsȯr How to pronounce brontosaur (audio) \

Definition of brontosaurus

: any of a genus (Apatosaurus) of very large sauropod dinosaurs of the Late Jurassic : apatosaurus

Note: The name brontosaurus continues to be commonly used for these dinosaurs even though their former genus name (Brontosaurus) is considered invalid.

Examples of brontosaurus in a Sentence

Recent Examples on the Web Two full-figured men snacking on brontosaurus burgers, married to women with waists that are the same size as their necks. Katie Musgrave,, "Never Have I Ever Felt So Insulted: Mindy Kaling’s New Show Is Great — Unless You’re Fat," 20 May 2020 An orphaned brontosaurus teams up with other young dinosaurs in order to reunite with their families in a valley. Ben Flanagan |, al, "51 hopeful movies that will make you feel good about life, now streaming on Netflix and more," 16 Mar. 2020 Trip skids across the floor at Hinkle Fieldhouse before games, finding his brontosaurus-sized bone and standing with it in front of the Butler bench seconds before tipoff. Gregg Doyel, Indianapolis Star, "Doyel: Meet Butler basketball's newest bulldog mascot, Blue IV," 22 Jan. 2020 To produce the rumbles of that big brontosaurus, Sennheiser’s Ambeo uses six 4-inch woofers and a pair of 3.5-inch mids to bounce deep tones off the walls and ceiling, nixing the need for a dedicated subwoofer. Popular Science, "Three options for adding surround sound to your home theater," 15 Jan. 2020 Yale’s brontosaurus is a historic one — the first ever discovered. Susan Dunne,, "Yale’s Peabody Museum is closing for 3 years, but if you hurry, you can still see the dinosaurs before they are dismantled," 26 Nov. 2019 Co-founded by Bill Wirtel in 1978, the studio specializes in stone-inlaid knives: The Apache gold, azurite, and turquoise are sourced in Arizona and the petrified brontosaurus bone in Utah. Ashlea Halpern, Condé Nast Traveler, "The Seven-Stop Shopping Guide to Santa Fe," 9 Sep. 2019 Giant brontosauruses, velociraptors, and multiple tyrannosaurus can be seen outside on the business' 8 acres and within its giant facility. Fernando Alfonso Iii, Houston Chronicle, "'Jurassic World' is a boon for one Texas business selling massive dinosaur ornaments," 20 June 2018 There’s a scene in Fallen Kingdom that will stay with me for a little while: a lone brontosaurus, standing on a shore nearly engulfed in ash and flame, stretching its long neck up to the sky and braying out a mournful plaint. Richard Lawson, HWD, "Jurassic World: Fallen Kingdom," 5 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'brontosaurus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of brontosaurus

1883, in the meaning defined above

History and Etymology for brontosaurus

New Latin, from Greek brontē thunder + sauros lizard; akin to Greek bremein to roar

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The first known use of brontosaurus was in 1883

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Cite this Entry

“Brontosaurus.” Dictionary, Merriam-Webster, Accessed 11 Aug. 2020.

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How to pronounce brontosaurus (audio)

English Language Learners Definition of brontosaurus

: a very large dinosaur that had a long neck and tail


bron·​to·​sau·​rus | \ ˌbrän-tə-ˈsȯr-əs How to pronounce brontosaurus (audio) \

Kids Definition of brontosaurus

: a huge plant-eating dinosaur with a long neck and tail and four thick legs

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