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English definition of “since”

since

conjunction
 
 
/sɪns/
TIME B1 from a time in the past until a later time or until now: He's been much happier since he started his new job. I've known Tim since he was seven.Starting from a particular time
BECAUSE B1 because: He drove quite slowly since we had plenty of time.Connecting words which introduce a cause or reason
(Definition of since conjunction from the Cambridge Learners Dictionary © Cambridge University Press)
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