noun, verb ·Moderate ·High school level
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"They were able to find the enemy fleet using radar."
"Police traffic RADARs can provide a speed reading on a detected target, but they cannot measure the range to the target."
"The Ministry of Defence funded the development of an entirely new radar and improved avionics."
"Each of these aircraft has been upgraded with a new radar and a more powerful engine."
"His sensitive radar for hidden alliances keeps him out of trouble."
"This was no ordinary signal for help that Baby-John was radaring to outer space, but a call that had to be heeded, for he had just seen two hard guys go down for the final count— […]"
"The ship is not equipped with radar."
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
Common synonyms include: aa radar, afc, afc mixer, altimeter, amplifier, analyzer.
The ship is not equipped with radar.
Pronounced /ˈɹeɪdɑː/.
The noun is derived from RADAR by anacronymic evolution. RADAR is an acronym of ra(dio) d(etection) a(nd) r(anging) which was coined by Lieutenant-Commander Samuel M. Tucker and Lieutenant-Commander F. R. Furth of the United States Navy in November 1940. The verb is probably derived from the noun.
Acronym of radio detection and ranging. Coined by the United States Navy in 1940. The lowercase form (radar) is by anacronymic evolution.