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master switch

   Also found in: Dictionary/thesaurus, Acronyms 0.01 sec.
master switch [′mas·tər ‚swich]
(electricity)
Switch that dominates the operation contactors, relays, or other magnetically operated devices.
Switch electrically ahead of a number of individual switches.
master switch
A single electric switch in a wiring system which controls the supply of power to a building, or the action of relays or any other remotely operated devices.
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The new research implicates a gene called JAK2 that acts as a master switch, turning genes on or off.
Cancer switch by Evening Chronicle (Newcastle, England)
The Cambridge University team say that new studies have shown that a gene called JAK2 acts as a master switch to turn different genes on or off, and cancer can develop if it breaks.
Scientists uncover 'genetic switch' that can trigger leukaemia by Asian News International
Reich was an assembler at Line Master Switch Company before she retired in 1980.
Victoria R. Reich, 93 by Telegram & Gazette (Worcester, MA)
 
 
 
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