log in

British  

verb

1. Also: log on.  to enter (an identification number, password, etc) from a remote terminal to gain access to a multiaccess system

---

noun

1. Also: login.  the process by which a computer user logs in

log in Idioms  

1. Also, log on. Enter into a computer the information needed to begin a session, as in I logged in at two o'clock, or There's no record of your logging on today. These expressions refer especially to large systems shared by numerous individuals, who need to enter a username or password before executing a program. The antonyms are log off and log out, meaning “to end a computer session.” All these expressions derive from the use of log in the nautical sense of entering information about a ship in a journal called a log book. [c. 1960]

---

Example Sentences

See Examples For:

log in

If your company has recently switched providers, log in or call to confirm what’s currently on file.

From MarketWatch ● Sep. 10, 2026

For travellers who were eventually able to log in, their journeys simply did not appear when they attempted to search for trains.

From BBC ● Jul. 30, 2026

So you just have to log in, shop around and find out.

From Los Angeles Times ● Jul. 29, 2026

To pressure victims into giving up their account information, they tell them they need to log in immediately before their points expire to claim such things as free headphones or Apple Watches.

From The Wall Street Journal ● Jun. 12, 2026

If I wanted to log in, I had no choice but to exercise first.

From "Ready Player One: A Novel" by Ernest Cline

Related Words

• load