on adverb - Definition in the Essential British English Dictionary - Cambridge Dictionaries Online

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English definition of “on”

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on

adverb
 
/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: Our old traditions live on.
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)
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