Connected to the internet. It means you can access websites, send emails, and do other things that require an internet connection.
I'm going online to check my email.
The store is offering online discounts.
We need to be online for the meeting.
Happening or available on the internet. Think of it as something you can do or find on the web.
The course is offered online.
I found an online tutorial.
They have an online store.
Currently happening or in progress. Like a project that's active and being worked on right now.
The editorial projects are online and being updated daily.
We have several online initiatives to improve customer service.
Following a regular route, like a train or bus. Usually refers to industries or businesses that are located along a transportation route.
The on-line industries benefited from the new railway.
Many factories are located on-line to the main highway for easy transport.
