From Longman Dictionary of Contemporary Englishuptimeup‧time /ˈʌptaɪm/ noun [uncountable] the period of time when a computer is working normally and is able to be used OPP downtime Some customers need 99% or better uptime from their mainframe computers.From Longman Business Dictionaryuptimeup‧time /ˈʌptaɪm/ noun [uncountable] COMPUTING the period of time when a computer is working normally and able to be usedOur service is an integral part in enhancing productivity and ensuring constant uptime.
