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iguana

American  
[ih-gwah-nuh] / ɪˈgwɑ nə /

noun

  1. a large, arboreal lizard, Iguana iguana, native to Central and South America, having stout legs and a crest of spines from neck to tail.

  2. any of various related lizards of the genera Iguana, Ctenosaura, Conolophus, and Amblyrhynchus.


iguana British  
/ ɪˈɡwɑːnə /

noun

  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

"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

Other Word Forms

Etymology

Origin of iguana

1545–55; < Spanish < Arawak iwana

Explanation

An iguana is a big lizard with distinctive spines running down its back. If you keep an iguana as a pet, you'll want to feed it a lot of fresh vegetables. Iguanas look a little intimidating, since they grow as large as six feet long to the tip of the tail and have a head that resembles a dinosaur. While pet iguanas can sometimes be somewhat aggressive, they can be tamed with enough handling. The word iguana is Spanish, and it comes from a West Indies language, Arawak, and its word for this particular kind of lizard, iwana.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The results showed that native Fijian iguana populations have much greater genetic diversity than previously thought — possibly pointing to an entirely new species of iguana.

From Los Angeles Times • Apr. 24, 2025

An iguana grabbed a ball at the 2014 Puerto Rico Open.

From Seattle Times • May 16, 2024

A new iguana joins Asia's rich reptile fauna, officially described as new to science in the open-access journal ZooKeys.

From Science Daily • Dec. 27, 2023

The International Union for Conservation of Nature lists Liolaemus forsteri, or the Forster’s tree iguana, as endangered, according to the Red Book of the Vertebrate Wildlife of Bolivia.

From National Geographic • Oct. 26, 2023

That evening our instructors took pity on us and gave us something else to eat: chunks of iguana.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins

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