Source : Free On-Line Dictionary of Computing

LOGIN
     
        1. An {object-oriented} {deductive language} and {database}
        system integrating {logic programming} and {inheritance}.
     
        ["LOGIN: A Logic Programming Language with Built-In
        Inheritance", H. Ait-Kaci et al, J Logic Programming
        3(3):185-215 (1986)].

login
     
         (Or "log in", "log on", "logon") To start a {session}
        with a system, usually by giving a {user name} and {password}
        as a means of user {authentication}.  The term is also used to
        mean the ability to access a service (also called an account),
        e.g. "Have you been given a login yet?"
     
        "Log in/on" is occasionally misused to refer to starting a
        session where no authorisation is involved, or to access where
        there is no session involved.  E.g. "Log on to our {Web
        site}!"
     
        "login" is also the {Unix} program which reads and verifies a
        user's user name and password and starts an {interactive}
        session.
     
        (1997-08-03)