rainforest

noun

rain·​for·​est ˈrān-ˌfȯr-əst How to pronounce rainforest (audio)
-ˌfär-
variants or less commonly rain forest
plural rainforests also rain forests
1
: a tropical woodland with an annual rainfall of at least 100 inches (254 centimeters) and marked by lofty broad-leaved evergreen trees forming a continuous canopy

called also tropical rainforest

2

Examples of rainforest 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.
Panama is also home to pristine beaches like the San Blas Islands, and rainforests teeming with wildlife. Miami Herald, 27 Feb. 2026 Akyp's arrival brought hope not just for the Akuntsu line but also for efforts to protect the equally fragile rainforest. ABC News, 27 Feb. 2026 According to the San Diego Zoo, toucans typically spend their lives high in the rainforest canopies of Central and South America. CBS News, 26 Feb. 2026 The absence of these species does not necessarily confirm population collapse — a five-day search window in dense rainforest cannot provide definitive conclusions. Hanna Wickes, Kansas City Star, 25 Feb. 2026 The Amazon rainforest is another. Hannah Ritchie, Big Think, 24 Feb. 2026 With the rainforest as a backdrop, many hotels in the area specialize in spa treatments embedded in nature, whether that’s a volcanic mud wrap or coffee body scrub. Jessica Sulima, Condé Nast Traveler, 23 Feb. 2026 This isn’t a theme park simulation—Fairchild’s two-acre rainforest is the real deal. Alexandra Emanuelli, Southern Living, 22 Feb. 2026 Venezuela is one of the most biodiverse, beautiful countries in the western hemisphere with tropical beaches to the north, lush mountain regions to the west and a rainforest region to the southeast. Gordon Wittenmyer, Cincinnati Enquirer, 18 Feb. 2026

Word History

First Known Use

1900, in the meaning defined at sense 1

Time Traveler
The first known use of rainforest was in 1900

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Cite this Entry

“Rainforest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainforest. Accessed 2 Mar. 2026.

Kids Definition

rain forest

noun
1
: an often tropical woodland with a high annual rainfall and very tall evergreen trees with tops forming a continuous layer

called also tropical rain forest

2

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