1 television/computer screen
ADJ. colour | CCTV, computer, television/TV, video
PREP. on a/the ~ The security staff can see all the outside of the building on their CCTV monitors.
2 machine that records/checks sth
ADJ. foetal, heart, oxygen, pulse, radiation
MONITOR + VERB detect sth | show sth The heart monitor shows the strength of your pulse.
3 sb who checks sth is done fairly/properly
ADJ. EU, UN UN monitors declared the referendum fair. | school | health, peace
ADV. carefully, closely, rigorously, strictly Television advertising is strictly monitored. | regularly, routinely, systematically | constantly, continuously | effectively, properly | automatically
VERB + MONITOR be able to We will now be able to monitor its progress more closely. | continue to The authorities will continue to monitor the situation.
PREP. for The workers are constantly monitored for exposure to radiation.