noun

monitor

MON-ih-tuh

noun

A screen used to display output from a computer or other device.

"She upgraded to a wider monitor for editing video."

"The monitor flickered once before showing the login screen."

A person or device that watches over something to check on its condition or progress.

"A heart monitor tracked her pulse throughout the night."

"The hallway monitor made sure students got to class on time."

verb

To watch or check something regularly over time.

"Doctors monitored his blood pressure closely after the surgery."

"The app monitors your spending and flags unusual charges."

How to Use Monitor

Learner’s notes

In plain EnglishEither the screen you look at, or the act of keeping a close eye on something.

Common pairings

monitor progress a computer monitor closely monitor

monitored past tense, monitors plural, monitors singular

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Can you complete this real example?

She upgraded to a wider _____ for editing video.

From Latin monitor, "one who warns," from monere, "to warn or remind" — the same root behind "admonish" and "premonition."

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