Try Our Apps


Gobble up these 8 terms for eating


[bron-tuh-sawr] /ˈbrɒn təˌsɔr/
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.
Origin of brontosaur Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for brontosaur
Historical Examples
  • He is a brontosaur: nine bones and six hundred barrels of plaster of Paris.

    What Is Man? And Other Stories Mark Twain (Samuel Clemens)
  • He is a brontosaur: nine bones and six hundred barrels of plaster of paris.

  • The brontosaur, though only sixty feet long, probably weighed twenty tons.

    The Story of Evolution Joseph McCabe
  • The twenty-ton brontosaur had a brain no larger than that of a new-born human infant.

    The Story of Evolution Joseph McCabe
brontosaur in Science
brontosaurus (brŏn'tə-sôr'əs) or brontosaur
An earlier name for apatosaurus.

Our Living Language  : Take a little deception, add a little excitement, stir them with a century-long mistake, and you have the mystery of the brontosaurus. Specifically, you have the mystery of its name. For 100 years this 70-foot-long, 30-ton vegetarian giant had two names. This case of double identity began in 1877, when bones of a large dinosaur were discovered. The creature was dubbed apatosaurus, a name that meant "deceptive lizard" or "unreal lizard." Two years later, bones of a larger dinosaur were found, and in all the excitement, scientists named it brontosaurus or "thunder lizard." This name stuck until scientists decided it was all a mistake—the two sets of bones actually belonged to the same type of dinosaur. Since it is a rule in taxonomy that the first name given to a newly discovered organism is the one that must be used, scientists have had to use the term apatosaurus. But "thunder lizard" had found a lot of popular appeal, and many people still prefer to call the beast brontosaurus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Word Value for brontosaur

Scrabble Words With Friends