monitor

1 of 2

noun

mon·​i·​tor ˈmä-nə-tər How to pronounce monitor (audio)
1
a
: a student appointed to assist a teacher
b
: one that warns or instructs
monitors and instructors for troops green in the art of warNew York Times
c
: one that monitors or is used in monitoring: such as
(1)
: an electronic device with a screen used for display (as of television pictures or computer information)
(2)
: a device for observing a biological condition or function
a heart monitor
2
3
[Monitor, first ship of the type]
a
: a heavily armored warship formerly used in coastal operations having a very low freeboard and one or more revolving gun turrets
b
: a small modern warship with shallow draft (see draft entry 1 sense 8) for coastal bombardment
4
: a raised central portion of a roof having low windows or louvers for providing light and air
monitorial adjective
monitorship noun

monitor

2 of 2

verb

monitored; monitoring ˈmä-nə-t(ə-)riŋ How to pronounce monitor (audio)

transitive verb

: to watch, keep track of, or check usually for a special purpose
Nurses monitored the patient's heart rate.

Examples of monitor in a Sentence

Noun They watched the press conference on a video monitor in a back room. We put a baby monitor in the nursery. U.N. weapons monitors and inspectors. Verb Nurses constantly monitored the patient's heart rate. We're in a good position to monitor and respond to customer concerns. Government agents have been monitoring the enemy's radio communications.
Recent Examples on the Web
Noun
Upgrade your computer, gaming headset, monitor or laptop with early Cyber Week deals on brands like Alienware, Inspiron and XPS. 5. Kasey Caminiti, USA TODAY, 25 Oct. 2024 Weirdly, the motherboard doesn’t have any monitor outputs, rendering the AMD Ryzen G-series CPU’s integrated graphics moot. PCMAG, 23 Oct. 2024
Verb
Imagine driving a car that knows your daily routine, can monitor nearby traffic, and even call for help in an emergency. Lars Daniel, Forbes, 27 Oct. 2024 The satellites monitor the unique magnetic signals that originate from the Earth's core, as well as from the mantle, crust, and oceans and the Earth’s outer magnetosphere. Janet Loehrke, USA TODAY, 26 Oct. 2024 See all Example Sentences for monitor 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'monitor.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Noun and Verb

Latin, one that warns, overseer, from monēre to warn — more at mind

First Known Use

Noun

1530, in the meaning defined at sense 1a

Verb

1924, in the meaning defined above

Time Traveler
The first known use of monitor was in 1530

Dictionary Entries Near monitor

Cite this Entry

“Monitor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/monitor. Accessed 4 Nov. 2024.

Kids Definition

monitor

1 of 2 noun
mon·​i·​tor ˈmän-ət-ər How to pronounce monitor (audio)
1
a
: a student appointed to assist a teacher
b
: a person that warns or instructs
c
: one that monitors or is used in monitoring
especially : a video screen used for display (as of television pictures or computer information)
2
3
a
: a heavily armored warship having low sides and revolving guns that was used against shipping in harbors and in river patrol
b
: a gunboat used to bombard coastal areas and riverbanks

monitor

2 of 2 verb
monitored; monitoring ˈmän-ət-ə-riŋ How to pronounce monitor (audio)
ˈmän-ə-triŋ
: to watch, observe, or check for a special purpose
monitor a broadcast for sound quality

Medical Definition

monitor

1 of 2 noun
mon·​i·​tor ˈmän-ət-ər How to pronounce monitor (audio)
: one that monitors
especially : a device for observing or measuring a biologically important condition or function
a heart monitor

monitor

2 of 2 transitive verb
1
: to watch, observe, or check closely or continuously
monitor a patient's vital signs
2
: to test for intensity of radiations especially if due to radioactivity

More from Merriam-Webster on monitor

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!