Main Entry: co·op·er·a·tion

Pronunciation: \(ˌ)kō-ˌä-pə-ˈrā-shən\

Function: noun

Date: 14th century

1 : the action of cooperating : common effort
2 : association of persons for common benefit

— co·op·er·a·tion·ist \-sh(ə-)nist\ noun