conservationist /ˌkɑːnsɚˈveɪʃənɪst/ noun plural conservationists
plural conservationists
Learner's definition of CONSERVATIONIST
[count]
: someone who works to protect animals, plants, and natural resources or to prevent the loss or waste of natural resources : a person who is involved in conservation(动植物、自然资源的)保护主义者