Meaning of "on" in Essential English Dictionary


adverb uk /ɒn/

A2 working or being used:

He left the computer on all day.
Is this microphone on?

A2 If you have something on, you are wearing it:

She has a black coat on.
Why don’t you put your new dress on?

B1 into a bus, train, plane, etc.:

Amy got on at .

happening or planned:

Is the party still on?
I’ve got a lot on at the moment.
What’s on at the cinema?

being broadcast or presented:

My is on tomorrow.

used to show that an action or event continues:

on and off

If something happens on and off during a period of time, it happens sometimes:

They’ve been seeing each other on and off since Christmas.

(Definition of “on adverb” from the Cambridge Essential Dictionary © Cambridge University Press)