rainforest
noun
rain·for·est
ˈrān-ˌfȯr-əst 
-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
Examples of rainforest in a Sentence
Recent Examples on the Web
The planned railway traverses ecologically sensitive regions including portions of the Amazon rainforest and the Andes Mountains, raising concerns about potential impacts.
—
Theo Burman
john Feng, MSNBC Newsweek, 11 July 2025
It’s packed with rainforests, lagoons, mangrove swamps, and rivers.
—AFAR Media, 8 July 2025
The park consists of over 400 square kilometers of rainforest, virgin beaches, mangroves, rivers and remote mountain ranges, and has been widely featured in documentaries by National Geographic, BBC and the Discovery Channel.
—Rafa Sales Ross, Variety, 2 July 2025
The image shown above displays a section of the Amazon rainforest in Bolivia with the Beni River meandering through.
—Emma R. Hasson, Scientific American, 1 July 2025
From tiny hummingbirds to fearsome raptors, the avian biodiversity of South America is truly a wonder to behold, with vast swathes of verdant rainforest, open grassland and glacial fjords all playing host to their own unique array of avian species.
—Jared Ranahan, Forbes.com, 30 June 2025
In 2023, DiCaprio and Bezos jointly supported the Protecting Our Planet Challenge, Bezos' $10 billion fund, to help protect the Amazon rainforest, its wildlife and the indigenous people who live there.
—Rachel Raposas, People.com, 26 June 2025
The satellite's radar reveals subtle terrain and vegetation differences across the Amazon rainforest.
—Daisy Dobrijevic, Space.com, 23 June 2025
There is a sliver of hope: The rainforests that currently carpet the tropics may be more resilient to high temperatures than those that existed before the Great Dying.
—Laura Paddison, CNN Money, 2 July 2025
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Theo Burman
john Feng, MSNBC Newsweek, 11 July 2025
It’s packed with rainforests, lagoons, mangrove swamps, and rivers.
—AFAR Media, 8 July 2025
The park consists of over 400 square kilometers of rainforest, virgin beaches, mangroves, rivers and remote mountain ranges, and has been widely featured in documentaries by National Geographic, BBC and the Discovery Channel.
—Rafa Sales Ross, Variety, 2 July 2025
The image shown above displays a section of the Amazon rainforest in Bolivia with the Beni River meandering through.
—Emma R. Hasson, Scientific American, 1 July 2025
From tiny hummingbirds to fearsome raptors, the avian biodiversity of South America is truly a wonder to behold, with vast swathes of verdant rainforest, open grassland and glacial fjords all playing host to their own unique array of avian species.
—Jared Ranahan, Forbes.com, 30 June 2025
In 2023, DiCaprio and Bezos jointly supported the Protecting Our Planet Challenge, Bezos' $10 billion fund, to help protect the Amazon rainforest, its wildlife and the indigenous people who live there.
—Rachel Raposas, People.com, 26 June 2025
The satellite's radar reveals subtle terrain and vegetation differences across the Amazon rainforest.
—Daisy Dobrijevic, Space.com, 23 June 2025
There is a sliver of hope: The rainforests that currently carpet the tropics may be more resilient to high temperatures than those that existed before the Great Dying.
—Laura Paddison, CNN Money, 2 July 2025
Cite this Entry
“Rainforest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainforest. Accessed 21 Jul. 2025.
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