deforest

UK: /diːˈfɒrɪst/

US: /diˈfɔrɪst, -ˈfɑr-/

US: (dē fôr′ist, -for′-)

WordReference Random House Learner's Dictionary of American English © 2026

de•for•est /diˈfɔrɪst, -ˈfɑr-/   v. [ ~ + obj]

1. to remove the trees and forests of:
   environmentalists working to prevent the pharmaceutical companies from deforesting that land.

de•for•est•a•tion /diˌfɔrɪˈsteɪʃən, -ˌfɑr-/  n. 

[uncountable] against deforestation of the Amazon.

Collins Concise English Dictionary © HarperCollins Publishers::

deforest / diːˈfɒrɪst/ verb

1. (transitive) to clear of trees
   Also: disforest

deˌforesˈtation noun

WordReference Random House Unabridged Dictionary of American English © 2026

De For•est  (di fôr′ist, for′-),  Lee, 

1. 1873–1961, U.S. inventor of radio, telegraphic, and telephonic equipment.

de•for•est  (dē fôr′ist, -for′-), v.t. 

1. to divest or clear of forests or trees:
   Poor planning deforested the area in ten years.

• de- + forest 1530–40

de•for′est•a′tion, n. 
de•for′est•er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

De Forest / də ˈfɒrɪst/ noun

1. Lee. 1873–1961, US inventor of telegraphic, telephonic, and radio equipment: patented the first triode valve (1907)