: 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.
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 Molt agreed—and according to Crutchfield, Molt took his revenge by killing the iguanas. Rory Doherty, Time, 6 Aug. 2026 Burmese pythons have wiped out 87% to 99% of native mammal populations in parts of the Everglades, and green iguanas tear up landscaping and burrow into seawalls, weakening infrastructure. Laurie Mermet, Sun Sentinel, 5 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 19 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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