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Terms for subject United States (7766 entries)

El	Elevated Railroad
el-hi	elementary and high school
Election	E
Election Commission	EC
Election Sensitive Area	ESA
Elections And Opinions Board	EOB
Electrical Pricing Information For Contractors	EPIC
electro-explosive device	An explosive or pyrotechnic component that initiates an explosive, burning, electrical, or mechanical train and is activated by the application of electrical energy
electro-optical-infrared countermeasure	A device or technique employing electro-optical-infrared materials or technology that is intended to impair the effectiveness of enemy activity, particularly with respect to precision guided weapons and sensor systems
electromagnetic battle management	The dynamic monitoring, assessing, planning, and directing of joint electromagnetic spectrum operations in support of the commander’s scheme of maneuver
electromagnetic compatibility	The ability of systems, equipment, and devices that use the electromagnetic spectrum to operate in their intended environments without causing or suffering unacceptable or unintentional degradation because of electromagnetic radiation or response
electromagnetic environment	The resulting product of the power and time distribution, in various frequency ranges, of the radiated or conducted electromagnetic emission levels encountered by a military force, system, or platform when performing its assigned mission in its intended operational environment
electromagnetic environmental effects	The impact of the electromagnetic environment upon the operational capability of military forces, equipment, systems, and platforms
electromagnetic hardening	Action taken to protect personnel, facilities, and/or equipment by blanking, filtering, attenuating, grounding, bonding, and/or shielding against undesirable effects of electromagnetic energy
electromagnetic interference	Any electromagnetic disturbance, induced intentionally or unintentionally, that interrupts, obstructs, or otherwise degrades or limits the effective performance of electronics and electrical equipment
electromagnetic intrusion	The intentional insertion of electromagnetic energy into transmission paths in any manner, with the objective of deceiving operators or of causing confusion
electromagnetic jamming	The deliberate radiation, reradiation, or reflection of electromagnetic energy for the purpose of preventing or reducing an enemy’s effective use of the electromagnetic spectrum, and with the intent of degrading or neutralizing the enemy’s combat capability
electromagnetic operational environment	The background electromagnetic environment and the friendly, neutral, and adversarial electromagnetic order of battle within the electromagnetic area of influence associated with a given operational area
electromagnetic pulse	The electromagnetic radiation from a strong electronic pulse, most commonly caused by a nuclear explosion that may couple with electrical or electronic systems to produce damaging current and voltage surges
electromagnetic radiation	Radiation made up of oscillating electric and magnetic fields and propagated with the speed of light