from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A dense evergreen forest with an annual rainfall of at least 406 centimeters (160 inches). Rainforests are often, but not always, located in tropical regions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun a forest in a climate with high annual rainfall and no dry season

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a forest with heavy annual rainfall


from Wiktionary, Creative Commons Attribution/Share-Alike License

rain +‎ forest, a calque of German Regenwald.


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  • Spotted owls, among others, love temperate rainforests.

    July 11, 2007