from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An apatosaurus.

from The Century Dictionary.

  • noun A genus of huge fossil dinosaurian reptiles, notable for their small head and diminutive brain-cavity, the whole skull not exceeding some of the neck-bones in size. One species was about 50 feet long, and probably weighed 20 tons or more.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Paleon.) A genus of large sauropod American dinosaurs of the jurassic era, or an individual of that genus. A length of sixty feet is believed to have been attained by these reptiles. The genus is also called Apatosaurus, and individuals of the genus are also called brontosaurs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun One of the largest land animals to ever walk the earth; an apatosaurus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun huge quadrupedal herbivorous dinosaur common in North America in the late Jurassic


from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin Brontosaurus, former genus name : Greek brontē, thunder + Greek sauros, lizard.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From New Latin, from Ancient Greek βροντή (bronte, "thunder") +‎ -saurus


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  • Redirect: apatosaurus.

    August 31, 2008

  • Lexicon of the Brontë sisters.

    September 1, 2008

  • Heehee!

    September 1, 2008

  • (Is it really brontosauruses? Not brontosauri?)

    April 12, 2010

  • At midnight in the museum hall

    The fossils gathered for a ball

    There were no drums or saxophones,

    But just the clatter of their bones,

    A rolling, rattling, carefree circus

    Of mammoth polkas and mazurkas.

    Pterodactyls and brontosauruses

    Sang ghostly prehistoric choruses.

    Amid the mastodontic wassail

    I caught the eye of one small fossil.

    "Cheer up, sad world," he said, and winked-

    "It's kind of fun to be extinct."

    Ogden Nash (of course)

    April 13, 2010