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English definition of “of”

of

preposition (THROUGH)    weak /əv/ strong /ɒv/ US  /ɑːv/
B1 through; having as the cause : He died of cancer . I didn't have to go there - I did it of my own free will. I want to know how it happened because it certainly didn't happen of itself.Connecting words which introduce a cause or reason Grammar:OfOf is a preposition.
(Definition of of preposition (THROUGH) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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