co·op·er·a·tion

[koh-op-uh-rey-shuhn]
noun
1.
an act or instance of working or acting together for a common purpose or benefit; joint action.
2.
more or less active assistance from a person, organization, etc.: We sought the cooperation of various civic leaders.
3.
willingness to cooperate: to indicate cooperation.
4.
Economics. the combination of persons for purposes of production, purchase, or distribution for their joint benefit: producers' cooperation; consumers' cooperation.
5.
Sociology. activity shared for mutual benefit.
6.
Ecology. mutually beneficial interaction among organisms living in a limited area.
Also, co-op·er·a·tion.


Origin:
1620–30; (< Middle French) < Late Latin cooperātiōn- (stem of cooperātiō). See cooperate, -ion

co·op·er·a·tion·ist, co-op·er·a·tion·ist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To cooperation
00:10
Cooperation is always a great word to know.
So is callithumpian. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Collins
World English Dictionary
cooperation or co-operation (kəʊˌɒpəˈreɪʃən) [Click for IPA pronunciation guide]
 
n
1.  joint operation or action
2.  assistance or willingness to assist
3.  economics the combination of consumers, workers, farmers, etc, in activities usually embracing production, distribution, or trade
4.  ecology beneficial but inessential interaction between two species in a community
 
co-operation or co-operation
 
n
 
cooper'ationist or co-operation
 
n
 
co-oper'ationist or co-operation
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

cooperation
late 14c., from L.L. cooperationem "a working together," from cooperari "to work together," from com- "with" + operari "to work" (see operation).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
And never mind that today's teens are actually crushed by enmity and want
  nothing more than cooperation and support.
In some cases, cooperation serves as a powerful tool for combating a common
  enemy or even disarming an attacker.
In fact, they emerged independently many times, presumably because cooperation
  among cells was such a good idea.
And it was busted through timely cooperation by a number of different
  intelligence agencies.
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