conservationistPronunciation: /kɒnsəˈveɪʃ(ə)nɪst/Translate conservationist | into French | into German | into Italian | into Spanish Definition of conservationist noun a person who advocates or acts for the protection and preservation of the environment and wildlife: [as modifier]:conservationist groupsconservationist in other Oxford dictionaries Definition of conservationist in the US English dictionary