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Meaning of SIDE EFFECT

Pronunciation:  sId i'fekt

WordNet Dictionary
  1. [n]  any unwanted secondary effect
  2. [n]  a secondary and usually adverse effect of a drug or therapy; "severe headaches are one of the side effects of the drug"
 See Also: black tongue, consequence, effect, effect, event, furry tongue, hairy tongue, issue, outcome, result, upshot



Computing Dictionary

A language construct that modifies the state of the system. The most common side-effects are assignment, input and output. A language without side-effects is purely-functional - execution consists of the evaluation of an expression and all subexpressions are referentially transparent.

Medical Dictionary
 Definition: A secondary and usually adverse effect, as from a drug or other treatment. For example, nausea is a side effect of some anticancer drugs.
Biology Dictionary
 Definition: An undesired effect of drug treatment that may range in severity from barely noticeable, to uncorfortable, to dangerous. Side effects are usually predictable.