Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An alphanumeric sequence that permits access to an electronic network, such as a telephone network or an automated teller machine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. an alphanumeric sequence that permits access to a secure service or network

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a code (a series of characters or digits) that must be entered in some way (typed or dialed or spoken) to get the use of something (a telephone line or a computer or a local area network etc.)

Etymologies

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