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electrical metallic conduit (EMC)
Conduit, usually fabricated of steel, which encloses electrical wiring, thereby protecting the wiring from outside damage. The difference between electrical metallic conduit and electrical metallic tubing (EMT) is that conduit is heavy-walled and usually has threaded ends; in contrast, tubing is thinner and is not threaded. Between these two is an intermediate metallic conduit (IMC), which is 25 percent lighter and less costly than EMT; it may be threaded or threadless.
Abbr. for intermediate metallic conduit.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
IMC (Instrument meteorological conditions)
The symbol used to designate instrument meteorological conditions. Meteorological conditions are expressed in terms of visibility, distance from clouds, and ceiling, less than the minimums specified for visual flight conditions.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
IMC(1) (Integrated Memory Controller) The circuit that handles input and output to the RAM chips. The IMC is built into the processor chip. See RAM.
(2) (Internet Mail Consortium, Santa Cruz, CA, www.imc.org) An industry trade association founded in 1996 by Paul Hoffman and Dave Crocker that promotes Internet email standards and features. One of the original anti-spam groups, some of the founding members were Microsoft, Netscape, Qualcomm and Sun. IMC maintains lists of email features supported by its members as well as lists of RFCs of all Internet email standards.
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