EMC

from The Free On-line Dictionary of Computing (8 July 2008)

Electromagnetic Compatibility
EMC

   <hardware, testing> (EMC) The extent to which a piece of
   hardware will tolerate electrical interference from other
   equipment, and will interfere with other equipment.

   There are strict legal EMC requirements for the sale of any
   electrical or electronic hardware in most countries, although
   the actual standards differ.  See, for example, EMCNet
   (http://emcnet.com/).

   See also {Electrostatic Discharge}, {Radio Frequency
   Interference}.

   (1997-12-19)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

EMC
       [Richard J.] Egan [Roger] Marino Company [unconfirmed] (EMC,
manufacturer)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

EMC
       ElectroMagnetic Compatibility