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English definition of “on”


preposition (PROCESS)    /ɒn/ US  /ɑːn/
used to show that a condition or process is being experienced: He accidentally set his bed on fire. Their flights to Paris are on special offer at the moment. Martin's on holiday this week. I'll be away on a training course next week. I often feel carsick when I'm on a long journey. Crime is on the increase (= is increasing) again. Grammar:On, ontoOn and onto are prepositions.See more
(Definition of on preposition (PROCESS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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