organization/ˌɔːgənaɪ-'zeɪ∫ən $ ˌɔːr-/

n. a group of people, countries, etc. that has formed for a particular purpose

n. [C] 组织，机构：a charity/business organization 慈善/商业机构

◇China entered the World Trade Organization in 2001. 中国于2001年加入世界贸易组织。

构词organize + -ation

用法英式英语还可写作organisation。