monitor

A monitor is a device or a person who watches or checks to see that all is going well. If you're babysitting, you might use a baby monitor so you can hear if the baby cries in its sleep.

Monitor can be used as a noun or a verb, both of which are concerned with watching over someone or something. A heart monitor displays the rhythm of your heart. A hall monitor is a person who checks to see that students aren't wandering the halls. If you are monitoring your grades, you are keeping track of them to see if they go up or down. And some parents buy a program that will monitor your Internet use, though you might think that this is an invasion of privacy.

Definitions of monitor
  1. noun
    someone who gives a warning so that a mistake can be avoided
    synonyms: admonisher, reminder
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    type of:
    defender, guardian, protector, shielder
    a person who cares for persons or property
  2. noun
    someone who supervises (an examination)
    synonyms: proctor
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    types:
    invigilator
    someone who watches examination candidates to prevent cheating
    type of:
    supervisor
    one who supervises or has charge and direction of
  3. noun
    electronic equipment that is used to check the quality or content of electronic transmissions
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    types:
    television monitor, tv monitor
    monitor used in a studio for monitoring the program being broadcast
    type of:
    electronic equipment, electronics
    equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)
  4. noun
    a piece of electronic equipment that keeps track of the operation of a system continuously and warns of trouble
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    types:
    cardiac monitor, heart monitor
    a piece of electronic equipment for continual observation of the function of the heart
    electronic fetal monitor, electronic foetal monitor, fetal monitor, foetal monitor
    an electronic monitor that monitors fetal heartbeat and the mother's uterine contractions during childbirth
    type of:
    electronic equipment, electronics
    equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor)
  5. verb
    keep tabs on; keep an eye on; keep under surveillance
    “we are monitoring the air quality”
    “the police monitor the suspect's moves”
    synonyms: supervise
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    types:
    sleuth, snoop, spy, stag
    watch, observe, or inquire secretly
    type of:
    observe
    watch attentively
  6. verb
    check, track, or observe by means of a receiver
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    type of:
    observe
    watch attentively
  7. noun
    display produced by a device that takes signals and displays them on a television screen or a computer monitor
    synonyms: monitoring device
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    types:
    computer monitor
    a device that displays signals on a computer screen
    type of:
    display, video display
    an electronic device that represents information in visual form
  8. noun
    any of various large tropical carnivorous lizards of Africa and Asia and Australia; fabled to warn of crocodiles
    synonyms: monitor lizard, varan
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    types:
    African monitor, Varanus niloticus
    destroys crocodile eggs
    Komodo dragon, Komodo lizard, Varanus komodoensis, dragon lizard, giant lizard
    the largest lizard in the world (10 feet); found on Indonesian islands
    type of:
    lizard
    relatively long-bodied reptile with usually two pairs of legs and a tapering tail
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