side effect noun
: an often harmful and unwanted effect of a drug or chemical that occurs along with the desired effect
: a result of an action that is not expected or intended
: a secondary and usually adverse effect (as of a drug) <toxic side effects> —called also side reaction
Examples of SIDE EFFECT
- Nausea and diarrhea are the side effects of the drug.
- the harmful side effects of using chemicals to kill insects
- The merger created positive side effects for both companies.
First Known Use of SIDE EFFECT
Rhymes with SIDE EFFECT
, birth defect
, edge effect
, in effect
, lake effect
side effect noun (Medical Dictionary)
: a secondary and usually adverse effect (as of a drug) <toxic side effects> <a side effect of drowsiness caused by antihistamines>—called also side reaction
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