We found 3 dictionaries that define the word tropical rain forests:

General (2 matching dictionaries)

1. tropical rain forests: Merriam-Webster
2. tropical rain forests: Vocabulary.com

Computing (1 matching dictionary)

3. Tropical rain forests: Encyclopedia

(Note: See tropical_rain_forest as well.)

Definitions from WordNet (tropical rain forest) ▸ noun:  a rain forest in a tropical area ▸ Also see tropical_rain_forest Phrases: Queensland tropical rain forests, more... ▸ Words similar to tropical rain forests ▸ Usage examples for tropical rain forests ▸ Idioms related to tropical rain forests ▸ Wikipedia articles (New!) ▸ Words that often appear near tropical rain forests ▸ Rhymes of tropical rain forests ▸ Invented words related to tropical rain forests