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

2

: temperate rainforest

Examples of rainforest in a Sentence

Recent Examples on the Web

Beyond the water, the destination is expanding its adventure offerings to include hiking, river tubing and rainforest exploration. — Rebecca Ann Hughes, Forbes.com, 10 July 2026

For anyone building a lifetime list of trails to conquer, seven routes stand apart, spanning ancient pilgrim paths, alpine passes and rainforest ridgelines across five continents. — Hanna Wickes, Miami Herald, 10 July 2026

Environmental advocates and some Indigenous leaders have warned that greater emphasis on extractive industries could increase pressure on environmentally sensitive areas, including parts of the Amazon rainforest. — ABC News, 10 July 2026

Secret Bay, Dominica Sustainability meets luxury in Dominica, where this retreat offers 27 chic villas, either secreted within the rainforest or overlooking the sparkling Caribbean. — Sarah Greaves-Gabbadon, Travel + Leisure, 7 July 2026

Word History

First Known Use

1900, in the meaning defined at sense 1

Phrases Containing rainforest

• temperate rainforest
• tropical rainforest

Rhymes for rainforest

• aorist
• deforest
• chorused
• forest
• sorest

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

: temperate rain forest