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mon·i·tor (mŏnĭ-tər)
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n.
1. One that admonishes, cautions, or reminds, especially with respect to matters of conduct.
2. A pupil who assists a teacher in routine duties.
3.
a. A usually electronic device used to record, regulate, or control a process or system.
b. A video display or speaker used in a production studio to check audio or video quality: The sound engineer detected a hiss on the monitor.
c. Computers A device that accepts video signals from a computer and displays information on a screen; a video display.
4. Computers A program that observes, supervises, or controls the activities of other programs.
5. An articulated device holding a rotating nozzle with which a jet of water is regulated, used in mining and firefighting.
6.
a. A heavily ironclad warship of the 19th century with a low, flat deck and one or more gun turrets.
b. A modern warship designed for coastal bombardment.
v. mon·i·tored, mon·i·tor·ing, mon·i·tors
v.tr.
1. To check the quality or content of (an electronic audio or visual signal) by means of a receiver.
2. To check by means of an electronic receiver for significant content, such as military, political, or illegal activity: monitor a suspected criminal's phone conversations.
3. To keep track of systematically with a view to collecting information: monitor the bear population of a national park; monitored the political views of the people.
4. To test or sample, especially on a regular or ongoing basis: monitored the city's drinking water for impurities.
5. To keep close watch over; supervise: monitor an examination.
6. To direct.
v.intr.
To act as a monitor.

[Latin, from monēre, to warn; see men-1 in the Appendix of Indo-European roots.]

moni·tor·ship n.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2016 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

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