Controller
/kənˈtroʊlər/
Definitions
2 meaningsA person or device that directs the operation of a machine, system, or process.
/kənˈtroʊlər/
A person or thing that directs or regulates something.
The video game controller felt comfortable in my hands.
💡 Simply: A controller is like the boss or the remote control for something. For example, the air traffic controller keeps airplanes from crashing.
👶 For kids: A controller is like the person in charge! They tell things what to do.
More Examples
The financial controller is responsible for managing the company's finances.
The air traffic controller gave the pilot clearance to land.
How It's Used
"The air traffic controller guided the plane safely to the runway."
"The financial controller oversees the accounting and financial reporting of the company."
"The game controller allowed the player to interact with the game."
A device that regulates or manages the operation of a machine or system.
/kənˈtroʊlər/
A device that regulates a machine or process.
The thermostat acts as a controller for the heating system.
💡 Simply: A controller is a tool that lets you command something else. Think of a remote to turn the TV on and off.
👶 For kids: A controller is a tool that helps tell a machine what to do!
More Examples
The remote control is the controller for the television.
The Programmable Logic Controller (PLC) regulated the factory's automated assembly line.
How It's Used
"The engine control unit (ECU) is a sophisticated controller."
"A programmable logic controller (PLC) automates industrial processes."
"The remote is the controller for your television."
Synonyms & Antonyms
Synonyms
Idioms & expressions
loss of control
The state of no longer being able to manage or direct something.
"After the accident, the driver experienced a loss of control of the vehicle."
in control
Having the ability to manage or direct something.
"The pilot remained in control of the aircraft despite the turbulence."
From Middle French *contrerouleur*, from *contreroller* (“to check, verify”), from *contre-* (“against, opposite”) + *rouler* (“to roll, record”). Ultimately from Latin *rotula* (“small wheel, roll”).
Historically, the term was used in accounting and finance to refer to an officer who oversaw financial operations. The usage expanded with technological developments to encompass devices that regulate systems.
Memory tip
Think of the person or object 'controlling' the situation or device.
Word Origin
"to check, verify"