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electronic countermeasures [ɪ,lek'trɔnɪk ,kauntə'meʒəz]
gen.	contre-mesures électroniques
mil., logist.	contre-mesures électroniques (ECMs)
electronic countermeasure
gen.	contre-mesure électronique
English thesaurus
electronic countermeasures [ɪ,lek'trɔnɪk ,kauntə'meʒəz]
avia., Canada	The division of electronic warfare involving actions taken to prevent or reduce an enemy’s effective use of the electromagnetic spectrum. ECMs include a electronic jamming; and b electronic deception.
mil., logist.	That division of electronic warfare involving actions taken to prevent or reduce an enemy's effective use of the electromagnetic spectrum through the use of electromagnetic energy. There are three subdivisions of electronic countermeasures: electronic jamming, electronic deception and electronic neutralization. (UKR/NATO)
electronic countermeasures ECMs [ɪ,lek'trɔnɪk ,kauntə'meʒəz]
mil., logist.	Portion of the electronic warfare including the actions undertaken in the electromagnetic spectrum to prevent it from being used efficiently or to reduce its efficient use by hostile forces. ECMs are divided into three categories: electronic jamming, deception, and suppression. FRA

electronic countermeasures: 4 phrases in 3 subjects

Aviation	1
Communications	2
General	1