(in electronic warfare) actions intended to interfere with an enemy's use of electromagnetic radiation equipment
electronic countermeasures in American English
plural noun
the use of electronic technology to jam and deceive enemy radars, esp. those used for air defense and interception
Abbreviation: ECM
Word origin
[1965–70]This word is first recorded in the period 1965–70. Other words that entered Englishat around the same time include: Finlandization, hired gun, no-fault, stun gun, wraparound
Examples of 'electronic countermeasures' in a sentence
electronic countermeasures
Tehran claimed that it brought the drone down by electronic countermeasures.
Times, Sunday Times (2011)
There he worked on the development and airborne testing of maritime electronic countermeasures.
Times, Sunday Times (2006)
Shortly before the incident, his convoy had lost vehicle- to- vehicle contact, while electronic countermeasures were beingdeployed against the threat of roadside blasts.