on-line

Adjective

online (comparative more online, superlative most online)

1. Of a generator or power plant: connected to the grid.
2. Of a computer: actively connected to the Internet or to some other communications service.
   • Is this modem online?
3. Available over, or delivered from, the Internet.
   • In America alone, people spent $170 billion on “direct marketing”—junk mail of both the physical and electronic varieties—last year. Yet of those who received unsolicited adverts through the post, only 3% bought anything as a result. If the bumf arrived electronically, the take-up rate was 0.1%....2013 May 25, “No hiding place”, in The Economist, volume 407, number 8837, page 74
4. Connected to the Internet.
   • I'll be online tonight, so I'll be able to reply to your email.
5. Available on a computer system, even if not networked.
   • Press the F1 key to access the online help.
6. Of a system: active, particularly building facilities (such as power) or a factory or power plant.
   • The power is online.

See all 10 meanings of online