Longman Dictionary of Contemporary English - organization

also organisation BrE n 1 a group such as a club or business that has formed for a particular purpose  (a charitable organization) 2 the act of planning and arranging things effectively  (Organisation's never been my strong point.) + of  (The organization of the fund raisers has been left to Ellen.) 3 the way in which the different parts of a system are arranged and work together + of  (the social organization of primitive cultures) - organizational adj  (organizational ability) - organizationally adv