a custom that for a long time has been an important feature of some group or society; "the institution of marriage"; "the institution of slavery"; "he had become an institution in the theater"ある集団や社会において長い間、重要な特徴となっている習慣制度
例:The institution of marriage. 結婚の慣例。
a hospital for mentally incompetent or unbalanced person精神的に機能不全の、またはバランスを失った人のための病院精神科病院
an organization founded and united for a specific purpose特定の目的のために設立され、統一された組織機関
an establishment consisting of a building or complex of buildings where an organization for the promotion of some cause is situatedなんらかの目的の促進のための組織がある建物の建設または総合ビルからなる機関機関
the act of starting something for the first time; introducing something new; "she looked forward to her initiation as an adult"; "the foundation of a new scientific society"初めて何かを始める行為開設