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 behavior is similar to what is seen in ants who are infected by fungi from the genus Ophiocordyceps in the Brazilian rainforest. Laura Baisas, Popular Science, 30 Jan. 2025 As a whole, the island boasts soaring mountain ranges, the third-largest rainforest worldwide, and pristine beaches lapped by crystal-clear waters. Bailey Berg, AFAR Media, 29 Jan. 2025 Rangers navigate the rugged rainforest roads on motorbikes, but in Kenny’s truck, the going was slow. Gina Decaprio Vercesi, Travel + Leisure, 23 Jan. 2025 For the curious traveler contemplating a trip to Panama — also home to rainforests, deserts, volcanoes and more than 1,600 islands — here’s CNN Travel’s guide to how to visit the canal. Cnn.com Wire Service, The Mercury News, 20 Jan. 2025 Costa Rica In this rainforest terrain, families can explore the tropics, learn about biodiversity, and relax on charming beaches. Annabelle Canela, Parents, 14 Jan. 2025 Snuggled between lush rainforests and the cerulean Flores Sea sits Labuan Bajo, a welcoming fishing town on enchanting Flores Island. Sandra MacGregor, Forbes, 13 Jan. 2025 The Global South comprises mainly rainforest nations. Ken Silverstein, Orlando Sentinel, 13 Jan. 2025 In addition to tropical varieties of all kinds (bromeliads, hibiscus, bananas, bird-of-paradise), Leu is home to one of the state’s largest formal rose gardens, a tropical steam garden (similar to a rainforest), a collection of fruit trees, a camellia collection, and so much more. Lisa Cericola, Southern Living, 16 Jan. 2025

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 2 Feb. 2025.

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

More from Merriam-Webster on rainforest

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