iguana

noun

igua·​na i-ˈgwä-nə How to pronounce iguana (audio)
: any of various large chiefly herbivorous usually green or brownish tropical American lizards (family Iguanidae, the iguana family) that have a serrated dorsal crest and large dewlap
broadly : any of various large lizards

Illustration of iguana

Illustration of iguana

Examples of iguana in a Sentence

Recent Examples on the Web
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The sweet spot is curious grade-schoolers, tweens, and teens—the kind of kids who will come home knowing the difference between a marine iguana and a land iguana, and why that matters. Ashlea Halpern, Condé Nast Traveler, 11 June 2026 According to Wilkins, a single female iguana can lay up to 70 eggs, contributing to rapid population growth. Joan Murray, CBS News, 9 June 2026 Michele Holtfreter planted fresh pentas in her yard this spring — only to find an iguana was tearing into her blossoms. Ruth Abramovitz, Sun Sentinel, 6 June 2026 Another woman asked Graciela about her famous picture of the lady of the iguanas. Literary Hub, 29 May 2026 See All Example Sentences for iguana

Word History

Etymology

Spanish, from Arawak & Carib iwana

First Known Use

1555, in the meaning defined above

Time Traveler
The first known use of iguana was in 1555

Browse Nearby Words

Cite this Entry

“Iguana.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iguana. Accessed 17 Jun. 2026.

Kids Definition

iguana

noun
igua·​na i-ˈgwän-ə How to pronounce iguana (audio)
: any of various large plant-eating tropical American lizards that have a ridge of tall scales along the middle of the back and loose skin hanging below the neck

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