To bring (a system, etc.) online; to promote to an active or running state.
"The IT team worked through the night to get the new server back online after the accidental shutdown."
In plain English: To go online means to connect your computer or phone to the internet so you can access websites and send messages.
"The website does not allow you to online directly, so you must download the app first."
Usage: Use "online" as a verb to describe connecting a computer system or network to the internet so it can function properly. It is incorrect to use this form when referring to people browsing the web, which requires using "go online" instead.
Of a system: connected (generally electrically) to a larger network.
"The technician checked whether the server was online before attempting to restore the database backup."
Of a generator or power plant: connected to the grid.
"The new solar farm will be online next week, finally connecting its excess energy to the main electrical grid."
In plain English: Online means being connected to the internet so you can access websites, send messages, or play games from anywhere.
"I can check the weather while I am online."
Usage: Use "online" to describe a device or system that is currently connected and active on a network, such as being logged into the internet. Do not use it to mean merely existing in a digital format, which should instead be described as "digital."
While online; while in a running or active state, or connected to the Internet.
"Please do not delete that file yet because it is still syncing online and could be corrupted if you interrupt the process."
In plain English: Being online means you are connected to the internet and can use devices like computers or phones to access websites and apps.
"You can check your email online from anywhere in the world."
Usage: Use "online" as an adverb to describe something that is currently active, functioning, or connected to the internet, such as saying the system is online right now. Avoid using it to mean "in line" or waiting for a turn, which requires the phrase "in line."
The word online appeared in 1950 by combining the words on and line. It originally described a state of being connected to a line or circuit.