log on

verb

variants or less commonly log in
logged on also logged in; logging on also logging in; logs on also logs in

intransitive verb

: to establish communication and initiate interaction with a computer or system
When you log on, you are taken to your "slimming apartment"; it's a virtual world, kind of like the Sims game …Gill Sutherland
… that voters from Iowa, New Hampshire, and Ohio will see different pages when they log in.Dana Milbank
often used with to
log in to the mainframe
After a hellish day at work or spat with your guy, you log on to Facebook …Jessica Knoll
often written as log onto and log into
… a so-called portal, the site that greets users when they first log onto the Internet.Katie Hafner
… almost seven million paying subscribers, who can log into the game and interact with other players.Seth Schiesel

Examples of log on in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Gently place the log on a pan or plate and refrigerate for at least 2 hours or overnight. Shafiq Najib, ABC News, 4 Aug. 2026 Yaroch used his top-secret security clearance to log on to government databases and memorize the passphrases associated with adversarial accounts. Max Grinstein, The Washington Examiner, 3 Aug. 2026 Public opposition to old-growth logging also played a role, causing California lawmakers to toughen rules on clearcuts and logging on steep hillsides and stream banks. Paul Rogers, Mercury News, 28 July 2026 The unit of value is shifting—from a user logging on to an app to the action an agent completes—and that shift can redraw how enterprise software is built, bought, priced, and used over the next three to five years. Girija Krishnamurthy, Forbes.com, 22 July 2026 See All Example Sentences for log on

Word History

First Known Use

1962, in the meaning defined above

Time Traveler
The first known use of log on was in 1962

Browse Nearby Words

Cite this Entry

“Log on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/log%20on. Accessed 5 Aug. 2026.

Kids Definition

log on

verb
variants or log in
: to make a connection with a computer or system
logged on to the Internet
log-on
ˈlȯg-ˌȯn
ˈläg-ˌän
noun

More from Merriam-Webster on log on

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!