medium Hear it!

medium definition - telecom
A substance that conveys something, i.e., through which something is carried or transmitted. In the context of telecommunications, a medium is something that passively supports or allows the conveyance or transmission of a signal, and is not necessarily a tangible thing that can be touched. See transmission medium.

Webster's New World Telecom Dictionary Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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