or co-op·er·a·tion

[ koh-op-uh-rey-shuh n ]
/ koʊˌɒp əˈreɪ ʃən /


an act or instance of working or acting together for a common purpose or benefit; joint action.
more or less active assistance from a person, organization, etc.: We sought the cooperation of various civic leaders.
willingness to cooperate: to indicate cooperation.
Economics. the combination of persons for purposes of production, purchase, or distribution for their joint benefit: producers' cooperation; consumers' cooperation.
Sociology. activity shared for mutual benefit.
Ecology. mutually beneficial interaction among organisms living in a limited area.

Origin of cooperation

1620–30; (< Middle French) < Late Latin cooperātiōn- (stem of cooperātiō). See cooperate, -ion
Related formsco·op·er·a·tion·ist, co-op·er·a·tion·ist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cooperationist



/ (kəʊˌɒpəˈreɪʃən) /


joint operation or action
assistance or willingness to assist
economics the combination of consumers, workers, farmers, etc, in activities usually embracing production, distribution, or trade
ecology beneficial but inessential interaction between two species in a community
Derived Formscooperationist or co-operationist, noun
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

Word Origin and History for cooperationist



late 15c., from Middle French coopération, or directly from Late Latin cooperationem (nominative cooperatio) "a working together," noun of action from past participle stem of cooperari "to work together," from com- "with" (see com-) + operari "to work" (see operation).

Online Etymology Dictionary, © 2010 Douglas Harper