One that practices or advocates conservation, especially of natural resources.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "conservationist" in a sentence
""I use the term conservationist when asked to describe myself, but to the extent that I'm an environmentalist, I do it out of a sense that it's the only sensible thing to do," Gibson said."
"As far as using it as a management technique to "give the deer a day of rest from us" as our "conservationist" friend suggests; Wouldn't lowering bag limits or shortening the season accomplish the same thing without eliminating one of the two days of the week that I can actually hunt?!?"
"The point was to set up a bidding war between the "conservationist" and the government of Japan."