Definition of online in English:

Share this entry


Pronunciation: /ɒnˈlʌɪn/


1Controlled by or connected to a computer.
Example sentences
  • Still, only thirty-one computers were online - that is connected to each other - in 1960.
  • After the thirty seconds, the system would be completely back online and the IMX network would again run for a full year.
1.1(Of an activity or service) available on or performed using the Internet or other computer network: online banking
More example sentences
  • Also available is an online shopping service that lists recommended foods based on a person's medical history.
  • The free online service is available on the Joburg City website, under e-services.
  • They also say they are more interested in the Internet for online entertainment than other users, according to the study.


1While connected to a computer or under computer control.
Example sentences
  • Once inside, the controls came online as he flicked on a few switches.
  • Moments later the flight control system came online, my HUD flickering into life.
  • Security controls had been back online as well as the little traps they planted through the space station.
1.1By means of the Internet or other computer network: shoppers would rather pick up the phone than do business online
More example sentences
  • Mobile users will be able to make video calls, download pictures online or access the Internet at faster speeds via 3G technology.
  • White goods are becoming increasingly popular to buy online, with internet sales now accounting for 6.6% of the market.
  • Exams and unit tests could be taken online over the internet.
1.2With processing of computer data carried out simultaneously with its production.
2In or into operation or existence: the new power plant will go online this month the company has additional production capacity coming online later this year
More example sentences
  • The new facility came online this month and expects to ramp up to full production by March.
  • If all goes well, Munton said construction could begin as early as September, with a fully operational plant online in about a year.
  • Air National Guard offices are expected to go online in July.
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.