cutover noun 4adjective 1forms 1 noun4 •The process of quickly replacing a telephone switchboard, in which the connections are duplicated to the new machine and the original connections are then suddenly disconnected. •Any process of quickly replacing a machine or system so as to minimize downtime. •An area of cutover land. •The discontinuity that occurs when switching from the Julian calendar to the Gregorian calendar. adjective1 •Having been cleared of valuable timber. formscutovers