Definition of monitor in English:

monitor

noun

  • 1An instrument or device used for observing, checking, or keeping a continuous record of a process or quantity.

    ‘a heart monitor’
    • ‘These shortcomings underscore the appeal of so-called continuous glucose monitors, which check blood sugar levels scores of times a day.’
    • ‘Put him on an electronic monitor and let him stay back at his house where he's been for the last year.’
    • ‘The ion and electron monitors were turned on several months ago in preparation for their role during solar wind collection.’
    • ‘The patient may be placed on a cardiac monitor to observe the heart rate and rhythm at all times.’
    • ‘A cheaper and even better solution is to install a depth monitor inside the operator cab.’
    • ‘Of all the monitors used in the operating room, pulse oximetry has been shown to have the highest yield in the early detection of life-threatening events.’
    • ‘During the procedure, monitors constantly check your heart, blood pressure and oxygen use.’
    • ‘The same units are used for electronic blood pressure monitors.’
    • ‘As part of his parole, the electronic monitor around his ankle keeps track of his comings and goings.’
    • ‘Eventually I began to wonder if the baby monitor was picking up the newborn from across the street.’
    • ‘A heart monitor clicked like a clock next to the bed.’
    • ‘The company's product line includes sleep-apnea monitors, electrocardiograph devices, and electronic stethoscopes.’
    • ‘These monitors contain built-in blood-sampling devices that take your blood from areas other than your finger, such as your arm, abdomen or thigh.’
    • ‘The refrigerator should be equipped with an electronic monitor and an alarm to alert staff members when temperatures are outside acceptable limits.’
    • ‘Pace also hinted that it was contemplating diversification into healthcare products such as heart or insulin monitors and security products for homes and businesses.’
    • ‘Alternatively, you can have a monitor fitted that records your heart rhythm over a 24-hour period.’
    • ‘I remember reading about a study where researchers hooked heart monitors up to various NASCAR drivers while they took practice laps around the track.’
    • ‘Electronic body-fat monitors are widely available and rapidly dropping in price.’
    • ‘He looked up to where the doctor was checking over the heart monitor.’
    • ‘The figure you arrive at is your target training heart rate, which you can observe on the monitor while exercising.’
    detector, scanner, recorder
    View synonyms
    1. 1.1 A person operating a monitor.
      • ‘The machine monitor who has worked for the company for nearly 39 years said the news was a shock.’
    2. 1.2 A person who observes a process or activity to check that it is carried out fairly or correctly, especially in an official capacity.
      ‘the independent judicial monitor’
      • ‘The certified factories must agree to unannounced inspections by accredited, independent monitors.’
      • ‘Like all players in the electoral process, monitors must also abide by the rules and regulations of the game.’
      • ‘They are asking for election monitors and observers to be sent to Gamelonia, of course all expenses to be borne by us.’
      • ‘A court-appointed monitor has been overseeing operations under a deferred-prosecution deal.’
      • ‘‘There might be international observers but not monitors, and they will have no role in supervising elections,’ Sorour added.’
      • ‘Independent monitors will calculate the scores and the top-scoring driver will represent Ireland at the Grand final in Sweden on September 16 and 17.’
      • ‘The task at hand now for international peace monitors is ensuring that the process gets back on track.’
      • ‘When the tribunals begin, foreign experts can act as observers and monitors.’
      • ‘They have asked for the hundreds of independent monitors to be allowed inside polling stations, a request approved by the judiciary but rejected by the electoral commission.’
      • ‘It appeared to be in line with some previously published estimates by independent monitors.’
      • ‘So this time around, city officials hope election monitors will pronounce the process glitch-free.’
      • ‘Paper ballots can be switched, and that is the purpose of having observers and monitors who witness the physical tallying.’
      • ‘He reiterated the country's stand that the country should observe UN resolutions and allow the arms monitors in for inspection.’
      • ‘To add to the saturation coverage, a number of independent civil rights monitors will observe events.’
      • ‘I headed over in his direction as a monitor scolded Ty to sit down.’
      • ‘And Pittsburgh education officials recently began placing independent monitors in each school after several cheating incidents.’
      • ‘The education board sent monitors to schools to make sure that the ceremonies are conducted according to protocol.’
      • ‘Under the agreement reached last year, the software giant was to appoint an independent monitor to check it was complying with the EC demands.’
      • ‘The insurance company might allow an independent monitor to scrutinise the demutualisation process on behalf of policyholders.’
      • ‘One approach would be to have independent monitors undertake multifaceted analysis of a firm's pro bono practice.’
      observer, watchdog, overseer, invigilator, supervisor
      View synonyms
    3. 1.3 A person who listens to and reports on foreign radio broadcasts and signals.
      • ‘Intelligence monitors are picking up less terror threat talk than a year ago, the Homeland Security Secretary said Thursday.’
    4. 1.4US A raised section of roof running down the center of a railroad car, building, etc., providing light or ventilation; a clerestory.
      • ‘The atrium is paved in pale limestone and spanned by four west-facing light monitors above.’
      • ‘A roof monitor admits north light, and a large window and porch offer quiet views to the wooded hillside.’
      • ‘Libraries are ideal building types for the extensive use of roof monitors because of the common one- or two-story configuration of the floor plan.’
  • 2A television receiver used in a studio to select or verify the picture being broadcast from a particular camera.

    • ‘Most people equate visualization with sitting in front of a bank of monitors watching several visual feeds.’
    • ‘During filming, the technical experts worked long and hard to get 30 monitors in a TV studio to show the same picture.’
    • ‘Each of 40 cheap television monitors atop rickety tables shows a resident of the notorious ghetto talking directly into the camera.’
    • ‘Within lay batteries of television monitors showing live feed from almost a hundred satellites, some of them so powerful that they could track the progress of a single ant on the ground.’
    • ‘All the doors will be bullet, heat and shock proof and have digital locks while closed circuit television monitors will help ensure that only authorised staff gain entrance.’
    • ‘My cell was in the corner of the room, and on the opposite wall was a sea of television monitors.’
    • ‘Instead, in one corner there is the monitor of a closed-circuit television showing the area in front of the entrance, the waiting room, the anteroom and the room itself.’
    • ‘I hit record, check the monitor and wait till I see the tape roll.’
    • ‘Products which could use the display include camera viewfinders, projectors, monitors, television sets and headsets for the military, medical and simulation markets.’
    • ‘So that the viewer always receives the proper images for the corresponding eye, a camera affixed to the monitor records the position of the head.’
    • ‘Backstage, the producer is barking instructions into a headset while pacing and gesturing wildly in front of a bank of television monitors.’
    • ‘Now I place it under a television camera, and that is fed to a television monitor in front of Howard.’
    • ‘The room has several wooden chairs with television monitors playing footage of moving clouds.’
    • ‘He pressed a few buttons on the console and an image appeared on one of the television monitors.’
    • ‘He looked up at the television monitor and watched as the crewman performed several tests to answer that question.’
    • ‘There is a section where images that have been recorded in real time are played back on four monitors.’
    • ‘Several friends joined us in such a room, which was outfitted with a large monitor and microphones.’
    • ‘He watched the monitors before him observing the activity going on in the building.’
    1. 2.1 A screen which displays an image generated by a computer.
      • ‘If they use a flat-screen monitor, they can raise or lower the apparatus that holds it.’
      • ‘After the video is scaled it is changed into a digital format recognized by the video card and then it is displayed on your monitor.’
      • ‘Is the cable from the monitor connected to the computer's video card connector?’
      • ‘You are staring at the your monitor waiting for the image to download.’
      • ‘The big monitor in the center was all black, except for some green text splashed across the screen.’
      • ‘The race is on at home and in the office to replace large and heavy boat anchor PCs and their monitors with notebook computers.’
      • ‘The commander looked at the monitor showing vital information about the pilots, cargo and condition of the tubes.’
      • ‘Flat-panel screens found their biggest niche in laptops, but now they're replacing desktop monitors and even television sets.’
      • ‘If you have a mouse with a scroll wheel you can change the size of fonts and images displayed on your monitor screen with a single click.’
      • ‘The semiconductor devices can be used in things such as TV screens, computer monitors, medical imaging and digital cameras.’
      • ‘Alone at his desk, the detective glances up at the black login screen displayed on the computer monitor.’
      • ‘The radar operator was watching carefully as the blip on his monitor representing the Renegade crawled into the system.’
      • ‘Within seconds, vital operational data can be displayed on the large wall display screens or individual computer monitors.’
      • ‘The robust demand is expected to continue into this year on rising shipments of laptop computers, LCD monitors and LCD TVs, Hsieh said.’
      • ‘I once called the computer store where I bought my computer because my monitor was not working.’
      • ‘Intraoperative magnetic resonance images are displayed on monitors within the gap.’
      • ‘He had just purchased a new computer with a touch screen monitor, and he needed help installing the software.’
      • ‘All over the room, men sat stationed at their monitors, reporting the status of the enemy compounds to their officers.’
      • ‘Computer monitors generally have a refresh rate of at least 60 Hz, meaning the screen is refreshed at least 60 times a second.’
      • ‘A 17-inch flat screen monitor that displays distortion-free images with a high degree of clarity makes the home theatre system complete.’
      screen, vdu, visual display unit
      View synonyms
    2. 2.2 A loudspeaker, especially one used by performers on stage to hear themselves or in the studio to hear what has been recorded.
      • ‘She doesn't even explain whether the black armband she's sporting is a mark of respect or an electronic doohickey for her earpiece monitor.’
      • ‘It's harder to hear through the monitors, and you tend to sing louder, and it's more direct, for sure.’
      • ‘Loud stage monitors can make the situation worse, because there's a constant slap delay when their sound bounces off of the back wall and heads back into the house.’
      • ‘A few minutes later, he found himself in the wings of the stage, with one of their sound guys, Marv, hooking up his microphone and ear monitors.’
      • ‘The 896HD's outputs fed both the quad mix to the house and the in-ear monitors used for the stage.’
      • ‘The Gryphon Trio also uses techniques well outside conventional chamber music, employing a click track that the musicians can hear from their in-the-ear monitors.’
      • ‘The musician's stage contains no wedge monitors and very few microphones.’
      • ‘The band listens on wedge monitors, but Brown uses a Shure PSM600 ear monitor in one ear.’
  • 3A student with disciplinary or other special duties during school hours.

    ‘show the hall monitor your pass’
    • ‘Classroom monitors hand out the pastels and Manila paper for the warm-up exercises.’
    • ‘The hall monitors stopped me, but when I told them of my destination, they let me go.’
    • ‘The approach taken by some schools to introduce pupils as monitors had proved effective at tackling vandalism on buses.’
    • ‘The hall monitors were out, leaning against the wall and making sure that the students stayed in the areas outside of the ongoing classes.’
    • ‘After she'd debriefed him, she had gone to Noelle's classroom, dodging the hall monitors on the way.’
    • ‘I pulled her quick into the restroom, before a hall monitor could come and give us demerits.’
    • ‘He began meandering down the halls, as was his duty as a monitor, trying to forget about the event that had just transpired.’
    • ‘I sighed in relief, grateful I hadn't run into one of the stricter hall monitors.’
    • ‘Yard monitors and lunch time supervisors can be trained to watch for signs of bullying.’
    • ‘Rebecca remembers that the teacher would always assign a student that would be a monitor during lunch.’
    • ‘I'm sorry, but it's my duty as hall monitor to catch those who are skipping and report them.’
    • ‘She knew she was supposed to be in homeroom, but she didn't see any hall monitors ready to give her detention.’
    • ‘By the time Sam entered the front door through a pair of metal detectors, he half-expected to find the student hall monitors equipped with machine guns.’
    • ‘This must have been nearly as shocking as that dark day lost in history when she was demoted from her position as milk monitor at primary school.’
    • ‘The monitor in the hall tried to stop us and ask for a hall pass, but we both ran past her and out to my car.’
    • ‘There are no teachers or hall monitors walking around, thankfully.’
    • ‘The school has two full-time dedicated student monitors who, according to the school, ‘supervise all activities of the students’.’
    • ‘She shook her head and leaned against him as they walked out of the school, totally unnoticed by teachers and hall monitors.’
    • ‘I have to get going - they're about to send out the campus monitors to enforce lights out.’
    • ‘Since the first grade he has been always an excellent pupil and the class monitor.’
    prefect, praepostor
    View synonyms
  • 4A large tropical Old World lizard with a long neck, narrow head, forked tongue, strong claws, and a short body. Monitors were formerly believed to give warning of crocodiles.

    • ‘I hurried over and he pointed out an enormous monitor lizard which had just crawled out of the water to sun itself on a rock.’
    • ‘Two million years ago bizarre creatures roamed the Australian continent - the flesh-eating giant rat-kangaroo, the thunder bird, the marsupial wolf, and a giant monitor lizard.’
    • ‘Probably the most famous species of monitor lizard is the Komodo Dragon which lives on several islands in Indonesia.’
    • ‘A good example is the savannah monitor, an African monitor lizard weighing about ten pounds, which spends most of its day patrolling its territory for tasty insects.’
    • ‘Beaded lizards and Gila monsters are opportunistic foragers, just as monitors are, eating any palatable thing they find.’
  • 5historical A shallow-draft armored warship mounting one or two heavy guns for bombardment.

    • ‘They were up against John Dahlgren's naval force of monitors and warships.’

verb

[with object]
  • 1Observe and check the progress or quality of (something) over a period of time; keep under systematic review.

    ‘equipment was installed to monitor air quality’
    • ‘It has now become part of the network of Bird Observatories, which monitor bird migration around Britain and Ireland.’
    • ‘Impacted wisdom teeth that are not causing problems should be monitored during regular visits to your dentist.’
    • ‘The duration of light and intense exercise training was also monitored during this study period.’
    • ‘The system monitors all workflows in progress and interprets the results upon completion of each step.’
    • ‘They will be responsible for developing data systems to track and monitor performance of general practitioners and ensure that the quality framework functions.’
    • ‘The quality of hospital food is constantly monitored and menus are reviewed on a regular basis.’
    • ‘It will monitor the service and review performance at the end of the second year.’
    • ‘To monitor your systematic progress, record each day's results.’
    • ‘To guard against corruption, those countries will use a system of peer review to monitor deployment of funds and progress toward good governance.’
    • ‘Room temperature and humidity need to be monitored and maintained within the recommended range.’
    • ‘The polls were monitored by 125 observers from 33 countries.’
    • ‘Workplace exposure levels have been monitored on a regular basis, and the trend has been towards a decrease.’
    • ‘Their health is also monitored through periodic check ups and supplements.’
    • ‘The condition of the fiber was tracked by monitoring the holding current throughout an experiment.’
    • ‘A lot of national and international observers are monitoring this election closely.’
    • ‘Patients in the latest test will be monitored for two years.’
    • ‘The patient is then monitored over a period of days while a video of the patient allows doctors to choose the best course of treatment.’
    • ‘With concerns growing, election officials across the UK have agreed to allow election observers from abroad to monitor the campaign.’
    • ‘The Government sees the Standard Assessment Tests as crucial to monitoring the progress of pupils and schools.’
    • ‘That council officers carry out a detailed review of boarded-up shops and devise a system for monitoring them.’
    observe, watch, keep an eye on, keep track of, track, keep under observation, keep watch on, keep under surveillance, surveil, check, keep a check on, scan, examine, study, record, note, oversee, supervise, superintend
    View synonyms
    1. 1.1 Maintain regular surveillance over.
      ‘it was easy for the enemy to monitor his movements’
      • ‘For example, a video camera continuously monitors everything that transpires, whereas surveillance by wiretap will only be triggered when someone speaks.’
      • ‘The diagram he drew of the surveillance equipment that monitored him was excellent.’
      • ‘For 15 years the company used hidden cameras to monitor its 3,000 employees at its Granite City, Illinois steel mill.’
      • ‘The academy monitored her every action on her laptop and her user name would always reveal exactly who she was.’
      • ‘The councillor has successfully lobbied for £25,000 for cameras to monitor the Eldene Centre, another area targeted by vandals.’
      • ‘May the government use electronic surveillance to monitor the movements and information use of suspected terrorists?’
      • ‘Architectural elements control pedestrian access, and surveillance cameras monitor people as they approach the area.’
      • ‘The £10,000 contribution will cover half of the cost of a new CCTV camera to monitor the Twickenham Riverside area.’
      • ‘This place had to be monitored by security cameras, he told himself, but he hadn't the time to be concerned about it.’
      • ‘In the adjacent corner, a small, elevated closed-circuit camera monitored their every move.’
      • ‘A further bid for European funding, which would enable the area to be monitored by CCTV cameras, is also being considered.’
      • ‘He insists that Jani was kept in a sealed-off room under constant video surveillance and closely monitored.’
      • ‘Eighteen surveillance cameras monitor the house and are observed continuously by a director or producer nearby.’
      • ‘The door is electronically locked and monitored by both surveillance cameras and employees.’
      • ‘The cops were of course present, along with undercover men in the crowd and surveillance equipment monitoring our every move.’
      • ‘The officer recalled a surveillance operation when detectives monitored them in a house in the Carndonagh area.’
      • ‘Thousands of police, army troops and security men stood on guard in and around the Grand Mosque as surveillance cameras monitored the crowds.’
      • ‘He added that some local people were keeping the plant under surveillance and monitoring movements in and out of the plant.’
      • ‘For our own security, advanced surveillance aircraft can monitor the movement of bypassed enemy army units.’
      • ‘The cars, which will be monitored by police and cameras, will be parked in locations around Burnley and left with property on show in a bid to attract thieves.’
      vigil, guard, watch, monitoring, policing, beat, beat-pounding, patrolling, round, sentry duty
      keep guard, keep guard on, guard, keep watch, keep watch on
      View synonyms
    2. 1.2 Listen to and report on (a foreign radio broadcast or a telephone conversation).
      • ‘Their communications - via telephone, email, fax - are monitored and disrupted.’
      • ‘He was monitoring the mob's wiretapped conversations through contacts he had in government.’
      • ‘The report from Pyongyang was monitored in Tokyo by Kyodo News.’
      • ‘Corporate spies could also use an inexpensive scanner radio to monitor the conversation.’
      • ‘Then, suddenly remembering that their conversation was being monitored, he turned a bit red.’
      • ‘Word on the street has it that email, internet access, and telephone calls are being monitored closely.’
      • ‘In March 1944, he became a liaison to the Australian Government to monitor and evaluate Japanese broadcasts.’
      • ‘Their conversations were recorded and in many cases monitored in real time.’
      • ‘One of the recon teams had a radio intercept operator monitoring enemy transmissions as the battle went on.’
      • ‘The act also stipulates that it must not be possible for a person to detect that his or her conversation is being monitored by the respective government agency.’
      • ‘Telephone conversations would be monitored during the gag period, it said.’
      • ‘The Europol document says the use of telephones - land lines and mobiles - will be monitored.’
      • ‘Telephonic communications of the German Army had been monitored and reported to the Allies by the French Resistance.’
      • ‘During this time, my home telephone was being monitored.’
      • ‘There were no further details in the KCNA report, monitored in Beijing.’
      • ‘Each wiretap request must specify a particular telephone number or location to be monitored.’
      • ‘What you're about to here is a conversation that my government monitored.’
      • ‘Some employers will monitor telephone conversations.’
      • ‘The report, monitored by the wire service, could not immediately be confirmed.’
      • ‘The threat of a reprisal strike was broadcast by the country's state-run radio, and monitored in Beijing.’
      listen in, spy, intrude
      View synonyms
    3. 1.3 Check or regulate the technical quality of (a radio transmission or television signal).
      • ‘The sound team sit in the same truck as the director, monitoring the presenter's and guest's sound levels’
      • ‘Anania says integration was important in metro area networking because transmissions need to be monitored at each node.’
      • ‘The negative peak was observed only if the PA signal had been monitored at low, and not high, frequencies.’
      • ‘Sennheiser HD600 headphones were used to monitor the DV40 while on location.’
      • ‘To specifically monitor the fluorescence signal, we placed a bandpass filter centered at 580 nm in front of the optical detector.’

Origin

Early 16th century (in monitor (sense 3 of the noun)): from Latin, from monit- ‘warned’, from the verb monere. monitor (sense 1 of the noun) dates from the 1930s.

Pronunciation

monitor

/ˈmänədər//ˈmɑnədər/