altruism - definition in the American English Dictionary - Cambridge Dictionaries Online

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English definition of “altruism”

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altruism

noun [U]  us   /ˈæl·truˌɪz·əm/
the attitude of caring about others and doing acts that help them although you do not get anything by doing those acts: Nobody believes those people are donating money to the president’s party purely out of altruism.
altruistic
adjective  us   /ˌæl·truˈɪs·tɪk/
altruistic motives
(Definition of altruism from the Cambridge Academic Content Dictionary © Cambridge University Press)
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