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electromagnetic induction
electromagnetic interference
electromagnetic pump
electromagnetic radiation
electromagnetic spectrum
electromagnetic unit
electromagnetic wave
electromagnetism
electromechanical
electromedical
electrometallurgy
electrometer
electromotive
electromotive force
electromyogram
electromyograph
electron
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electron optics
e·lec·tron op·tics


noun 
Definition:
 
study of electron beams: the science that deals with the direction, deflection, or focusing of beams of electrons by electric and magnetic fields, e.g. in electron lenses ( takes a singular verb )

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