1540s, "senior pupil at a school charged with keeping order, etc.," from Latin monitor "one who reminds, admonishes, or checks," also "an overseer, instructor, guide, teacher," agent noun from monere "to admonish, warn, advise," related to memini "I remember, I am mindful of," and to mens "mind," from PIE root *men- "to think" (see mind (n.)).
The type of lizard so called because it is supposed to give warning of crocodiles (1826). Meaning "squat, slow-moving type of ironclad warship" (1862) so called from name of the first vessel of this design, chosen by the inventor, Swedish-born U.S. engineer John Ericsson (1803-1889), because it was meant to "admonish" the Confederate leaders in the U.S. Civil War. Broadcasting sense of "a device to continuously check on the technical quality of a transmission" (1931) led to special sense of "a TV screen displaying the picture from a particular camera."
monitor (v.)
1818, "to guide;" 1924, "to check for quality" (originally especially of radio signals), from monitor (n.). General sense from 1944. Related: Monitored; monitoring.
实用例句
1. Officials had not been allowed to monitor the voting.
以前不允许官员监督投票。
来自柯林斯例句
2. Meetings are held periodically to monitor progress on the case.
定期举行会议以监督案件的进展。
来自柯林斯例句
3. It would monitor traffic flows and provide feedback to motorists.
它能监控交通状况，然后给司机提供反馈信息。
来自柯林斯例句
4. Fund managers are poorly placed to monitor firms.
基金管理人不适合监管公司。
来自柯林斯例句
5. The heart monitor shows low levels of consciousness.