Learn how to say On correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word on:
in contact or connection with the surface of; at the upper surface of ⇒ an apple on the ground, a mark on the table cloth
attached to ⇒ a puppet on a string
carried with ⇒ I’ve no money on me
in the immediate vicinity of; close to or along the side of ⇒ a house on the sea, this verges on the ridiculous!
within the time limits of a day or date ⇒ he arrived on Thursday
being performed upon or relayed through the medium of ⇒ what’s on the television?
at the occasion of ⇒ on his retirement
used to indicate support, subsistence, contingency, etc ⇒ he lives on bread, it depends on what you want
regularly taking (a drug) ⇒ she’s on the pill
addicted to ⇒ he’s on heroin
by means of (something considered as a mode of transport) (esp in such phrases as on foot, on wheels, on horseback, etc)
in the process or course of ⇒ on a journey, on strike
concerned with or relating to ⇒ a tax on potatoes, a programme on archaeology
used to indicate the basis, grounds, or cause, as of a statement or action ⇒ I have it on good authority
against: used to indicate opposition ⇒ they marched on the city at dawn
used to indicate a meeting or encounter ⇒ he crept up on her
(used with an adjective preceded by the) indicating the manner or way in which an action is carried out ⇒ on the sly, on the cheap
staked or wagered as a bet ⇒ ten pounds on that horse
charged to ⇒ the drinks are on me
(usually followed by it) (Australian) drinking alcoholic liquor
(informal (or dialect) to the loss or disadvantage of ⇒ the old car gave out on us
adverb (often used as a particle)
in the position or state required for the commencement or sustained continuation, as of a mechanical operation ⇒ the radio’s been on all night
attached to, surrounding, or placed in contact with something ⇒ the girl had nothing on
taking place ⇒ what’s on tonight?
in a manner indicating continuity, persistence, concentration, etc ⇒ don’t keep on about it, the play went on all afternoon
in a direction towards something, esp forwards; so as to make progress ⇒ we drove on towards London, march on!
See on and off
See on and on