monitor

Meanings

1. 1
   noun

   A screen that shows information from a computer.

   The information flashed up on the monitor.

2. 2
   verb

   To watch and check something carefully over a period of time.

   Nurses monitor the patient's heart rate throughout the night.

3. 3
   noun

   A piece of equipment that continuously checks how a system is working and warns of problems.

   A heart monitor beeped steadily beside the hospital bed.

Appears in

Simplified etymology

Monitor entered English in the early 16th century with the sense “a reminder or warning,” from Latin monere, “to warn.” It later denoted a pupil appointed to supervise others, while its familiar senses involving observation, checking, and electronic displays date mainly from the mid-20th century.

From Latin monitor (“warner”), from perfect passive participle monitus (“warning”), from verb monere (“to warn, admonish, remind”). Warship sense is from USS Monitor, the first ship of this type.

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