From Longman Business Dictionarydown timeˈdown time1[uncountable]COMPUTINGMANUFACTURING time that a machine in a factory or a computer is not working properly and cannot be usedTo reduce down time, the designers made all parts modular. Parts needing service can be popped out and quickly replaced.2[uncountable]MANUFACTURING time that a factory is not working, usually because there is not enough demand for its productsMany companies were planning longer than normal down time during the holidays. → time
