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 River Caqueta snakes nearly 1,800 miles into the heart of the Amazon rainforest.
—
Jacob Whitehead, New York Times, 27 May 2026
The Amazon, the world’s largest rainforest, plays a critical role in regulating the global climate.
—ABC News, 27 May 2026
Costa Rica Costa Rica’s rainforests offer varied bird-watching experiences.
—Catherine Garcia, TheWeek, 27 May 2026
Around three-quarters of the falls can be viewed from Zimbabwe’s rainforest paths and viewpoints.
—Sarah Kingdom, Forbes.com, 23 May 2026
Resins from African rainforests were likely traded alongside other commodities from sub-Saharan Africa via the Red Sea from at least the first century BC, noted the researchers.
—Preeti Jha, semafor.com, 22 May 2026
The story starts in the Amazon rainforest.
—Jeff Guo, NPR, 22 May 2026
These billowing grasslands, rising up to heights of 10 feet, were once the largest continuous ecosystem on the continent, with more biodiversity than any place in the world aside from the Amazon rainforest.
—Matt Kirouac, Travel + Leisure, 20 May 2026
As covert wars collide across Tehran and the rainforests of Africa, every move risks igniting a global firestorm.
—Rosy Cordero, Deadline, 19 May 2026
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Jacob Whitehead, New York Times, 27 May 2026
The Amazon, the world’s largest rainforest, plays a critical role in regulating the global climate.
—ABC News, 27 May 2026
Costa Rica Costa Rica’s rainforests offer varied bird-watching experiences.
—Catherine Garcia, TheWeek, 27 May 2026
Around three-quarters of the falls can be viewed from Zimbabwe’s rainforest paths and viewpoints.
—Sarah Kingdom, Forbes.com, 23 May 2026
Resins from African rainforests were likely traded alongside other commodities from sub-Saharan Africa via the Red Sea from at least the first century BC, noted the researchers.
—Preeti Jha, semafor.com, 22 May 2026
The story starts in the Amazon rainforest.
—Jeff Guo, NPR, 22 May 2026
These billowing grasslands, rising up to heights of 10 feet, were once the largest continuous ecosystem on the continent, with more biodiversity than any place in the world aside from the Amazon rainforest.
—Matt Kirouac, Travel + Leisure, 20 May 2026
As covert wars collide across Tehran and the rainforests of Africa, every move risks igniting a global firestorm.
—Rosy Cordero, Deadline, 19 May 2026
Cite this Entry
“Rainforest.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rainforest. Accessed 28 May. 2026.
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