downtime

[ doun-tahym ]
/ ˈdaʊnˌtaɪm /

noun

a time during a regular working period when an employee is not actively productive.
an interval during which a machine is not productive, as during repair, malfunction, maintenance.

Origin of downtime

First recorded in 1925–30; down1 + time
Also called dead time.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for downtime

downtime

/ (ˈdaʊnˌtaɪm) /

noun

commerce time during which a machine or plant is not working because it is incapable of production, as when under repair: the term is sometimes used to include all nonproductive timeCompare idle time
informal time spent not working; spare time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012