• synonyms


[ih-gwah-nuh-don, ih-gwan-uh-]
  1. a plant-eating dinosaur of the genus Iguanodon that lived in Europe early in the Cretaceous Period and grew to a length of from 15 to 30 feet (4.5 to 9 meters) and walked erect on its hind feet.
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Origin of iguanodon

< New Latin (1825) < Spanish iguan(a) iguana + Greek odṓn, variant of odoús tooth
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for iguanodon

Historical Examples of iguanodon

  • The American Hadrosaurus must have decidedly resembled the Iguanodon.

    Extinct Monsters

    H. N. Hutchinson

  • "I think it can have been no other than the Iguanodon," said the doctor.

  • Where the iguanodon lived the elephant might have lived, but there was no elephant at that time.

  • If it's not an Iguanodon, it's a prehistoric animal of some sort.

    Tell England

    Ernest Raymond

  • Again, as with the iguanodon, the foot to fit the track may be found in the same layer of rock, but this is not often the case.

    Animals of the Past

    Frederic A. Lucas

British Dictionary definitions for iguanodon


  1. a massive herbivorous long-tailed bipedal dinosaur of the genus Iguanodon, common in Europe and N Africa in Jurassic and Cretaceous times: suborder Ornithopoda (ornithopods)
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Word Origin for iguanodon

C19: New Latin, from iguana + Greek odōn tooth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for iguanodon



dinosaur name, 1825, hybrid from iguana + stem of Greek odonys "tooth" (on model of mastodon). So called because the fossil teeth and bones were thought to resemble those of the lizard.

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Online Etymology Dictionary, © 2010 Douglas Harper