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English definition of “on”

on

preposition (TOOL)    /ɒn/ US  /ɑːn/
B1 used when referring to a tool, instrument, or system that is used to do something: I do all my household accounts on computer. Chris is on drums and Mike's on bass guitar. I'm on (= talking on) the phone.Using and misusing Grammar:On, ontoOn and onto are prepositions.See more
(Definition of on preposition (TOOL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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