con‧ser‧va‧tion‧ist /ˌkɒnsəˈveɪʃ
ənəst, ˌkɒnsəˈveɪʃ
ənɪst $ ˌkɑːnsər-/
noun [countable] someone who works to protect animals, plants etc or to protect old buildings
—conservationism noun [uncountable] [TahlilGaran] Dictionary of Contemporary English ▲