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of

preposition (THROUGH)
 
 
weak /əv/ strong /ɒv/ US  /ɑːv/

Definition

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
(Definition of of preposition (THROUGH) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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