We found 4 dictionaries that define the word primary forest:

General (2 matching dictionaries)

1. Primary forest: Wikipedia, the Free Encyclopedia
2. primary forest: Wiktionary

Science (2 matching dictionaries)

3. Botanical Terms (No longer online)
4. Biodiversity (No longer online)

Definitions from Wiktionary (primary forest) ▸ noun:  Synonym of old-growth forest ▸ Words similar to primary forest ▸ Usage examples for primary forest ▸ Idioms related to primary forest ▸ Wikipedia articles (New!) ▸ Words that often appear near primary forest ▸ Rhymes of primary forest ▸ Invented words related to primary forest