controller
noun
con·trol·ler
kən-ˈtrō-lər 
ˈkän-ˌtrō-
ˈkän-ˌtrō-
1
c
: the chief accounting officer of a business enterprise or an institution (such as a college)
2
b
Examples of controller in a Sentence
the controllers for the video game system seem fairly well designed
Recent Examples on the Web
The former state controller has been running for California governor longer than just about anybody in the cheek-by-jowl field.
—
Los Angeles Times, 8 Mar. 2026
Training the controllers The controllers of the humanoid robot were trained on dynamic parkour motions extracted from the dataset, using reinforcement learning.
—Atharva Gosavi, Interesting Engineering, 6 Mar. 2026
Weston’s engineering team designed the display and control panel as well as the hand controllers located in the shuttle’s flight deck.
—IEEE Spectrum, 5 Mar. 2026
Otherwise, Apple has doubled the starting storage capacity for its 13-inch and 15-inch MacBook Air models from 256GB to 512GB, respectively, while increasing the SSDs’ overall data transfer bandwidth and upgrading the systems' storage controller.
—Joe Osborne, PC Magazine, 4 Mar. 2026
See All Example Sentences for controller
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Los Angeles Times, 8 Mar. 2026
Training the controllers The controllers of the humanoid robot were trained on dynamic parkour motions extracted from the dataset, using reinforcement learning.
—Atharva Gosavi, Interesting Engineering, 6 Mar. 2026
Weston’s engineering team designed the display and control panel as well as the hand controllers located in the shuttle’s flight deck.
—IEEE Spectrum, 5 Mar. 2026
Otherwise, Apple has doubled the starting storage capacity for its 13-inch and 15-inch MacBook Air models from 256GB to 512GB, respectively, while increasing the SSDs’ overall data transfer bandwidth and upgrading the systems' storage controller.
—Joe Osborne, PC Magazine, 4 Mar. 2026
See All Example Sentences for controller
Cite this Entry
“Controller.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/controller. Accessed 13 Mar. 2026.
Copy CitationKids Definition
controller
noun
con·trol·ler
kən-ˈtrō-lər
ˈkän-ˌtrō-lər
ˈkän-ˌtrō-lər
1
: the chief accounting officer of a business or institution
2
: a person who controls
an air traffic controller
Legal Definition
controller
noun
con·trol·ler
kən-ˈtrō-lər, ˈkän-ˌtrō-
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