environmentalism

environmentalist

[en-vahy-ruhn-men-tl-ist, -vahy-ern-]
noun
1.
an expert on environmental problems.
2.
any person who advocates or works to protect the air, water, animals, plants, and other natural resources from pollution or its effects.
3.
a person who believes that differences between individuals or groups, especially in moral and intellectual attributes, are predominantly determined by environmental factors, as surroundings, upbringing, or experience (opposed to hereditarian ).

Origin:
1915–20; environmental + -ist

environmentalism, noun
antienvironmentalist, noun, adjective
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World English Dictionary
environmentalism (ɪnˌvaɪrənˈmɛntəˌlɪzəm)
 
n
psychol Compare hereditarianism the belief that a person's behaviour is affected chiefly by his environment

environmentalist (ɪnˌvaɪrənˈmɛntəlɪst)
 
n
1.  an adherent of environmentalism
2.  a person who is concerned with the maintenance of ecological balance and the conservation of the environment
3.  a person concerned with issues that affect the environment, such as pollution

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

environmentalism
1923, as a psychological theory (in the nature vs. nurture debate), from environmental + -ism. The ecological sense is from 1972. Related: Environmentalist (1916 in the psychological sense).
Online Etymology Dictionary, © 2010 Douglas Harper
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