on-line
adjective
Definitions
Of a system: connected (generally electrically) to a larger network.
Available over, or delivered from, the Internet.
Example: I prefer to read online newspapers.
Connected to the Internet.
Example: I'll be online tonight, so I'll be able to reply to your email.
Available on a computer system, even if not networked.
Example: Press the F1 key to access the online help.
adverb
Definitions
While online; while in a running or active state, or connected to the Internet.
Example: He works online.