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.
This isn’t a theme park simulation—Fairchild’s two-acre rainforest is the real deal. Alexandra Emanuelli, Southern Living, 22 Feb. 2026 The Tyersall-Gallop core is integrated into the park’s existing rainforest and the Bukit Timah core is home to a children's garden complete with treehouses, a suspension bridge, and farm. Condé Nast, Condé Nast Traveler, 21 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 It’s surrounded by thick rainforest, backed by rolling hills, and angled just enough to catch glimpses of the ocean in the distance. Abby Montanez, Robb Report, 17 Feb. 2026 More than a third of that loss was old-growth rainforests which hold vast carbon stocks and are crucial for limiting climate change. ABC News, 17 Feb. 2026 Although some Indigenous tribes in the rainforests were said to have used batrachotoxin from dart frogs for hunting, scientist haven't found any evidence that epibatidine was ever used for that purpose. Dinah Voyles Pulver, USA Today, 15 Feb. 2026 The home is next to a small lake and just a quick walk from the River Tanama, offering plenty of rainforest views and outdoorsy experiences for adventure-seeking guests. Nicole Kliest, Vogue, 15 Feb. 2026 The spa—tucked in the rainforest—has tree house treatment rooms and signature therapies. Nneka M. Okona, Travel + Leisure, 15 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

Browse Nearby Words

Cite this Entry

“Rainforest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainforest. Accessed 24 Feb. 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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