closedPronunciation: /kləʊzd/Translate closed | into German | into Spanish Definition of closed adjective 1not open:rooms with closed doors lined the hallway he sat with his eyes closed (of a society or system) not communicating with or influenced by others: the perception of the Soviet Union as a closed society had changed limited to certain people; not open or available to all:the UN Security Council met in closed session unwilling to accept new ideas:you’re facing the situation with a closed mind 2(of a business) having ceased trading, especially for a short period:he put the ‘Closed’ sign up on the door 3 Mathematics (of a set) having the property that the result of a specified operation on any element of the set is itself a member of the set. (of a set) containing all its limit points. Geometry (of a curve or figure) formed from a single unbroken line. Phrases behind closed doors taking place secretly or without public knowledge: the legislature allows its business to be completed behind closed doors closed book a subject or person about which one knows nothing:accounting has always been a closed book to meclosed in other Oxford dictionaries Definition of closed in the US English dictionary
