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English definition of “environmentalist”

environmentalist

noun [C] uk   /ɪnˌvaɪ.rənˈmen.təl.ɪst/ us    /-ˌvaɪr.ənˈmen.t̬əl-/
C1 a person who is interested in or studies the environment and who tries to protect it from being damaged by human activitiesEnvironmental issuesRubbish and wasteProtection and protectors
(Definition of environmentalist from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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