radar

/ˈɹeɪdɑː(ɹ)//ˈɹeɪdɚ/

noun

1
A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of sent radio waves (usually microwaves) reflected from their surfaces
2
A type of system using such method, differentiated by platform, configuration, frequency, power, and other technical attributes.
3
An installation of such a system or of the transmitting and receiving apparatus.
4
A superior ability to detect something.
“His sensitive radar for hidden alliances keeps him out of trouble.”

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