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side effect (n.)

also side-effect, 1884, from side (adj.) + effect (n.). Medical use, with reference to drugs, is recorded from 1939.

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Definitions of side effect from WordNet

side effect (n.)
a secondary and usually adverse effect of a drug or therapy;
severe headaches are one of the side effects of the drug
side effect (n.)
any adverse and unwanted secondary effect;
Synonyms: fallout
From wordnet.princeton.edu

Dictionary entries near side effect

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sideboard

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