controller

[ kuh n-troh-ler ]
/ kənˈtroʊ lər /

noun

an employee, often an officer, of a business firm who checks expenditures, finances, etc.; comptroller.
a person who regulates, directs, or restrains.
British Aeronautics. a dispatcher.
a regulating mechanism; governor.
Also called control unit, processor. Computers. the key component of a device, as a terminal, printer, or external storage unit, that contains the circuitry necessary to interpret and execute instructions fed into the device.
a remote piece of hardware used to direct or control an electronic device: a video-game controller.

Origin of controller

1350–1400; Middle English countrollour < Anglo-French countrero(u)llour, Middle French contrerolleur, equivalent to contrerolle duplicate roll (see control) + -eur, -our < Latin -ōr- -or2 or -ātōr- -ator

OTHER WORDS FROM controller

con·trol·ler·ship, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for controller

British Dictionary definitions for controller

controller
/ (kənˈtrəʊlə) /

noun

a person who directs, regulates, or restrains
Also called: comptroller a business executive or government officer who is responsible for financial planning, control, etc
the equipment concerned with controlling the operation of an electrical device

Derived forms of controller

controllership, noun
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