English Dictionary

radar

/ˈɹeɪ.dɑː(ɹ)/

noun

(uncountable) 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

The radar detected an incoming aircraft.

意味（1）

(uncountable) 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

The enemy fleet was able to be found using radar.

意味（2）

(countable) A type of system using such a method, differentiated by platform, configuration, frequency, power, and other technical attributes.

意味（3）

(countable) An installation of such a system or of the transmitting and receiving apparatus.

意味（4）

(countable, figuratively) A superior ability to detect something.

His sensitive radar for hidden alliances keeps him out of trouble.