a large, arboreal lizard, Iguana iguana, native to Central and South America, having stout legs and a crest of spines from neck to tail.
any of various related lizards of the genera Iguana, Ctenosaura, Conolophus, and Amblyrhynchus.

1545–55; < Spanish < Arawak iwana

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World English Dictionary
iguana (ɪˈɡwɑːnə)
1.  either of two large tropical American arboreal herbivorous lizards of the genus Iguana, esp I. iguana (common iguana), having a greyish-green body with a row of spines along the back: family Iguanidae
2.  Also called: iguanid any other lizard of the tropical American family Iguanidae
3.  another name for leguaan
[C16: from Spanish, from Arawak iwana]
n, —adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1555, from Sp., from Arawakan iguana, iwana, the local name for the lizard.
"Foure footed beastes ... named Iuannas, muche lyke vnto Crocodiles, of eyght foote length, of moste pleasaunte taste." [Richard Eden, "Decades of the New World," 1555]
Dinosaur name Iguanodon is 1830, from iguana + stem of Gk. odonys "tooth," on model of mastodon; so called because the fossil teeth and bones were thought to resemble those of the lizard.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
He said he secured his three dogs and put his iguana in a carrying case because he was concerned he might have to evacuate.
The iguana, which is not a true lizard, are vegetarians and are often found in trees.
The flight of the iguana a sidelong view of science and nature.
Images for iguana
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