1. [uncountable] the act of starting to use a computer system or online account, usually by typing a name or word that you choose to use
   • ● If you've forgotten your logon ID, click this link.
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2. [countable] the name that you use to enter a computer system or online account
   • ● Enter your logon and password and press ‘go’.
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[TahlilGaran] English Dictionary ▲