rain·​for·​est ˈrān-ˌfȯr-əst How to pronounce rainforest (audio)
variants or less commonly rain forest
plural rainforests also rain forests
: 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


Examples of rainforest in a Sentence

Recent Examples on the Web In southern Brazil, the now-lush rainforest environment once was a vast desert. Irene Wright, Miami Herald, 13 June 2024 Birds may get toxic feathers from eating beetles Songbirds in the pristine rainforests of New Guinea, including the regent whistler and rufous-naped bellbird, have potent neurotoxins in their feathers like those found among poison dart frogs. Brian Handwerk, Smithsonian Magazine, 12 June 2024 Many migrants interviewed had flown from Africa, Asia or Europe to South America and trekked north through the Darién Gap, a 60-mile stretch of dense rainforest between Colombia and Panama. Patrick J. McDonnell, Los Angeles Times, 16 May 2024 Light floods in from skylights like a rainforest canopy, and there is no better setting for an energizing breakfast. Stacey Wreathall and Dafydd Gwyon, Travel + Leisure, 15 May 2024 So a team of scientists from the Smithsonian and the Max Planck Institute of Animal Behavior exploited a natural phenomenon that occurs in the rainforest on Barro Colorado Island in Panama. Paul Smaglik, Discover Magazine, 31 May 2024 The final hearing on May 29 was held in the Amazon rainforest city of Manaus. Jake Spring, The Christian Science Monitor, 30 May 2024 The plant collection was assembled by teams of experts who conducted primary, first-hand field investigations and plant identification work in rainforest regions around the globe in addition to gathering data about traditional medicinal uses of plants from shamans and other Indigenous healers. Charlotte Observer, 29 May 2024 Whitsunday hinterland pelican spiders live in the leaves on the rainforest ground, the study said. Aspen Pflughoeft, Miami Herald, 15 May 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'rainforest.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1900, in the meaning defined at sense 1

Time Traveler
The first known use of rainforest was in 1900

Dictionary Entries Near rainforest

Cite this Entry

“Rainforest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainforest. Accessed 21 Jun. 2024.

Kids Definition

rain forest

: 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


More from Merriam-Webster on rainforest

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