online

When you're online, you are using a computer or other device that's connected to the Internet. If someone asks if you're online, they're wondering whether you have Internet access.

You might say, "I need to go online and check my email," or "I don't know if she's still meeting me — she hasn't been online all day." Or you could describe something that's available or readable on the Internet, like a news story, as being online. While the adjective officially describes a connection to any computer network, it's almost always used these days to mean "on the Internet." The word online has been around since 1950.

Primary Meanings of online

1.
adj
connected to a computer network or accessible by computer
2.
adj
on a regular route of a railroad or bus or airline system
3.
adj
being in progress now
Full Definitions of online
1

adj connected to a computer network or accessible by computer

Synonyms:
on-line
connected, machine-accessible
stored in, controlled by, or in direct communication with a central computer
Antonyms:
off-line
not connected to a computer network
2

adj on a regular route of a railroad or bus or airline system

Synonyms:
on-line
Antonyms:
off-line
not on a regular route of a transportation system
3

adj being in progress now

Synonyms:
on-line
current
occurring in or belonging to the present time

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