: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Darwin took pages of notes on the landscape and its flora and fauna, including mockingbirds, tortoises, finches, and swimming iguanas. Michele Metych Britannica Editors Sep. 14, Encyclopedia Britannica, 14 Sep. 2026 Short-haired or hairless animals tend to cast well, like chihuahuas, Sphynx cats, or iguanas. Yvonne Villasenor, Los Angeles Times, 10 Sep. 2026 The man grabbed his iguana (which survived the flight) and left. Amanda Rosa, Miami Herald, 2 Sep. 2026 Goode needed no persuading about the beauty of animals like New Caledonian geckos, African bush vipers, Caribbean rock iguanas, and similar Cyclura. Matthew Carey, Deadline, 8 Aug. 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 23 Sep. 2026.

Kids Definition

: 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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