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English definition of “log in”

log in

(also log on) phrasal verb with log     /lɒɡ/ verb [T] (-gg-)
[I or T] IT, INTERNET to connect to a computer system by putting in a particular set of letters or numbers: What is the user name and password that you use to log on? If you are already a registered user, please log in.log in/on to sth Find out more about our products by logging on to our website.log in/on to do sth It has 1.7 million registered customers who log in to play games and socialize.log sb in/on Your network administrator will log you in the first time you use the system. → See also log-in, log-on
(Definition of log in from the Cambridge Business English Dictionary © Cambridge University Press)
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