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English definition of “side effect”

side effect

noun [C]     /ˈsaɪdɪfekt/
MEDICINE another effect that a drug has on your body in addition to the main effect for which the doctor has given you the drug : Headaches are one side effect of this drug .Disease and illness - general words
RESULT an unexpected result of a situation Outcomes and consequences
(Definition of side effect noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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