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

It amounts to advertising that one has to log in to receive, only to find the new message has nothing to do with ongoing healthcare.

From The Wall Street Journal ● Sep. 17, 2026

Request your beneficiary designations in writing: Call or log in to every financial account, life-insurance policy and retirement plan.

From MarketWatch ● Sep. 10, 2026

Australia is set to force social media companies to allow users to easily opt in or out of content recommended by algorithms when they log in.

From BBC ● Sep. 8, 2026

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

From Los Angeles Times ● Jul. 29, 2026

“I almost never log in from home. Luckily, the Sixers didn’t know that.”

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

Related Words

• load