n. One who advocates for the protection of the biosphere from misuse from human activity through such measures as ecosystem protection, waste reduction and pollution prevention
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. someone who works to protect the environment from destruction or pollution
Word Usage
""The people at the parks board who had a vision of this way back in the '60s were kind of visionaries, and they were really environmentalists before the term environmentalist was ever used, before it became popular," Coupar told the"