Definitions

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

  • noun Any of various extinct terrestrial reptiles of the orders Saurischia and Ornithischia that existed during the Mesozoic Era, including both carnivores and herbivores and often reaching a gigantic size.
  • noun Any of various other large extinct reptiles, such as an ichthyosaur.
  • noun A relic of the past.
  • noun One that is hopelessly outmoded or unwieldy.

from The Century Dictionary.

  • noun One of the Dinosauria. Also spelled deinosaur.

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

  • noun (Paleon.) One of the Dinosauria.

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

  • noun Any of various extinct reptiles belonging to the Dinosauria, existing between about 230 million and 65 million years ago.
  • noun figuratively, colloquial A person or organisation which is very old or has very old-fashioned views or is not willing to change and adapt.
  • noun figuratively, colloquial Anything that is no longer in common use or practice.

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

  • noun any of numerous extinct terrestrial reptiles of the Mesozoic era

Etymologies

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

[New Latin Dīnosauria, group name, from Dīnosaurus, former genus name : Greek deinos, monstrous + Greek sauros, lizard.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek δεινός (deinos, "terrible, awesome, mighty, fearfully great") + σαῦρος (sauros, "lizard, reptile").

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Examples

  • The name dinosaur comes from the Greek words for “monstrous lizard.

    dinosaurs 2002

  • The term "dinosaur" derived from the English paleontologist Richard Owen in 1842 and in essence it means "terrible, powerful, wondrous lizard."

    Lance Simmens: Dinosaurs and Fossil Fools Lance Simmens 2011

  • The term dinosaur was invented by Sir Richard Owen in 1842 to describe a large extinct reptile.

    CreationWiki - Recent changes [en] Ashcraft 2010

  • The term dinosaur was invented by Sir Richard Owen in 1842 to describe a large extinct reptile.

    CreationWiki - Recent changes [en] Ashcraft 2010

  • The replica dinosaur is almost 6 feet tall and uses tens of thousands of bricks.

    Extreme Lego 2008

  • Mick sighed dramatically, as he often did when confronted with what he called my dinosaur tendencies.

    While Other People Sleep Muller, Marcia 1998

  • Sir Richard Owen - the man who coined the word "dinosaur."

    Forbes.com: News Alex Knapp 2012

  • It was given to the Natural History Museum by renowned fossil hunter Sir Richard Owen who helped found the museum and famously coined the word "dinosaur".

    BBC News - Home 2011

  • The name dinosaur, meaning terrible lizard, represents an order of fossil reptiles.

    Wealth of the World's Waste Places and Oceania Jewett Castello Gilson

  • It was okay as a novel (but not especially original) and fine as a film (even if it was scientifically implausible), but the threat of being eaten by a dinosaur is a hardy one, and as Transformers proved (the eighties incarnation, not the Michael Bay war crime), talking dinosaurs are fucking brilliant.

    I’m Catching Up With Where My NaNoWriMo Novel Is Going « The Graveyard 2009

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