environmentalist

[ en-vahy-ruh n-men-tl-ist, -vahy-ern- ]
/ ɛnˌvaɪ rənˈmɛn tl ɪst, -ˌvaɪ ərn- /

noun

an expert on environmental problems.
any person who advocates or works to protect the air, water, animals, plants, and other natural resources from pollution or its effects.
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).

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Origin of environmentalist

First recorded in 1915–20; environmental + -ist

OTHER WORDS FROM environmentalist

en·vi·ron·men·tal·ism, nounan·ti·en·vi·ron·men·tal·ist, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for environmentalism

British Dictionary definitions for environmentalism (1 of 2)

environmentalism
/ (ɪnˌvaɪrənˈmɛntəˌlɪzəm) /

noun

psychol the belief that a person's behaviour is affected chiefly by his environmentCompare hereditarianism

British Dictionary definitions for environmentalism (2 of 2)

environmentalist
/ (ɪnˌvaɪrənˈmɛntəlɪst) /

noun

an adherent of environmentalism
a person who is concerned with the maintenance of ecological balance and the conservation of the environment
a person concerned with issues that affect the environment, such as pollution
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012