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Definition of iguanodon

iguanodon

/ɪˈɡwɑːnəˌdɑːn/
i · guan · o · don
Plural:iguanodons
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iguanodon Lexical Profile

iguanodon Game Scores & Validity

• noun

1

A large, primarily bipedal herbivorous dinosaur of the early Cretaceous period, characterized by a long, stiff tail, a horny beak, and a distinctive, prominent thumb spike.

Example

"The natural history museum unveiled a fully articulated skeleton of an iguanodon, allowing visitors to clearly see its famous spiked thumbs."

• Nearby Words

igloo
ignition
iguana
iguanodon
iguazu
iguazu falls
iiwi

Word Origin & Etymology

Coined in 1825 by English paleontologist Gideon Mantell from 'iguana' and the Greek suffix '-odon' (tooth), because the fossilized teeth he discovered closely resembled those of a modern iguana.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Iguanodon. In Wordmom Dictionary. Retrieved Oct 13, 2026, from https://wordmom.com/dictionary/iguanodon
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