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electromagnet
electromagnetic
electromagnetic field
electromagnetic force
electromagnetic induction
electromagnetic interference
electromagnetic pump
electromagnetic radiation
electromagnetic spectrum
electromagnetic unit
electromagnetic wave
electromagnetism
electromechanical
electromedical
electrometallurgy
electrometer
electromotive
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electron lens
e·lec·tron lens (plural e·lec·tron lens·es)


noun 
Definition:
 
device to control an electron beam: a device that creates an electric or magnetic field around the path of an electron beam so that the beam may be focused
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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