Search Result for "environmentalism": 
Wordnet 3.0

NOUN (2)

1. the philosophical doctrine that environment is more important than heredity in determining intellectual growth;

2. the activity of protecting the environment from pollution or destruction; 



WordNet (r) 3.0 (2006):

environmentalism
    n 1: the philosophical doctrine that environment is more
         important than heredity in determining intellectual growth
         [ant: hereditarianism]
    2: the activity of protecting the environment from pollution or
       destruction