con·​trol·​ler | \ kən-ˈtrō-lər How to pronounce controller (audio) , ˈkän-ˌtrō- How to pronounce controller (audio) \

Definition of controller

c : the chief accounting officer of a business enterprise or an institution (such as a college)
2a : one that controls or has power or authority to control air traffic controller

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Other Words from controller

controllership \ kən-​ˈtrō-​lər-​ˌship How to pronounce controllership (audio) , ˈkän-​ˌtrō-​ \ noun

Synonyms for controller


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Examples of controller in a Sentence

the controllers for the video game system seem fairly well designed
Recent Examples on the Web According to the agency, the flight experienced intermittent communication difficulties between the capsule and the ground, which impeded the ability of flight controllers to send commands and otherwise control the vehicle. Doug Cameron, WSJ, "NASA to Review Botched Boeing Launch," 8 Feb. 2020 They have been created in the form of insects that have had chips implanted in them to bring them under the whim of human controllers, who are thus able to direct the ways that their charges either scuttle or fly. The Economist, "Marine science Half machine, half jellyfish. The latest thing in ocean exploration," 30 Jan. 2020 So our writers put together a list of the best gaming controllers for every type of player. Alex Baker-whitcomb, Wired, "The Coronavirus Global Health Emergency, an Amazon Rival, and More News," 30 Jan. 2020 Enter the world of modern DJ controllers, which work with the music files on your laptop to mix killer sets with old-school FX. Popular Science, "Equipment essentials for beginner DJs," 17 Jan. 2020 Prystaiko says investigators also have been given access to recordings of air-traffic controllers at the Tehran airport. Washington Post, "The Latest: Officials lower Canadian death count in crash," 11 Jan. 2020 But those planes are continuously monitored and directed by a human pilot and co-pilot, not to mention a fleet of human air-traffic controllers. Liaquat Ahamed, The New Yorker, "The Mail," 26 Aug. 2019 Inside Mission Control on that summer morning, teams of NASA flight controllers sat nervously at their consoles. Norah O'donnell, CBS News, ""Man on the Moon:" The 50th anniversary of the Apollo 11 landing," 16 July 2019 The number of traffic controllers will be adjusted if necessary. Karen Berkowitz,, "District 112's plea to Northwood parents during temporary transition to Elm Place: Don't drive students to school," 6 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'controller.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of controller

15th century, in the meaning defined at sense 1a

History and Etymology for controller

Middle English countreroller, from Anglo-French contreroulur, from contreroule

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Time Traveler for controller

Time Traveler

The first known use of controller was in the 15th century

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Statistics for controller

Last Updated

10 Feb 2020

Cite this Entry

“Controller.” Dictionary, Merriam-Webster, Accessed 19 Feb. 2020.

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More Definitions for controller


How to pronounce controller (audio) How to pronounce controller (audio)

English Language Learners Definition of controller

: a person who is in charge of the money received and paid out by a business or college
: a person who directs the action of something
: a device or piece of equipment used to operate a machine, vehicle, or system


con·​trol·​ler | \ kən-ˈtrō-lər, ˈkän-ˌtrō- How to pronounce controller (audio) \

Legal Definition of controller

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