rainforest
UK: ˈreɪnˌfɒrɪst | US: ˈreɪnˌfɔːrɪst
n. A dense, biodiverse forest characterized by high annual rainfall, typically found in tropical regions.
The word "rainforest" is a transparent compound formed by combining "rain" (Old English regn, meaning precipitation) and "forest" (Latin forestis, via Old French, meaning wooded area). The term emerged in the late 19th century to describe ecosystems sustained by heavy rainfall. The morphemes retain their original meanings, making the word logically intuitive: a forest defined by abundant rain.
The Amazon rainforest is home to countless species found nowhere else.
Deforestation threatens the biodiversity of tropical rainforests.
Scientists study rainforest canopies to discover new medicinal plants.
The Congo Basin contains the world’s second-largest rainforest.
Ecotourism helps raise awareness about rainforest conservation.