Search Result for "conservationist": 
Wordnet 3.0

NOUN (1)

1. someone who works to protect the environment from destruction or pollution;
[syn: environmentalist, conservationist]



WordNet (r) 3.0 (2006):

conservationist
    n 1: someone who works to protect the environment from
         destruction or pollution [syn: environmentalist,
         conservationist]