What does side effect mean?

Definitions for side effect

Here are all the possible meanings and translations of the word side effect.

Princeton's WordNet

  1. side effect(noun)

    a secondary and usually adverse effect of a drug or therapy

    "severe headaches are one of the side effects of the drug"

  2. side effect, fallout(noun)

    any adverse and unwanted secondary effect

    "a strategy to contain the fallout from the accounting scandal"


  1. side effect(Noun)

    An unintended consequence of any action in addition to the intended consequence of that action.

  2. side effect(Noun)

    An adverse effect, an unintended consequence of a drug or therapy; usually not a beneficial effect.

  3. side effect(Noun)

    A change in state caused by a function call (typically "side-effect").


  1. Side effect

    In computer science, a function or expression is said to have a side effect if, in addition to returning a value, it also modifies some state or has an observable interaction with calling functions of the outside world. For example, a function might modify a global or static variable, modify one of its arguments, raise an exception, write data to a display or file, read data, or call other side-effecting functions. In the presence of side effects, a program's behavior depends on history; that is, the order of evaluation matters. Understanding and debugging a function with side effects requires knowledge about the context and its possible histories. Side effects are the most common way that a program interacts with the outside world. But the degree to which side effects are used depends on the programming paradigm. Imperative programming is known for its frequent utilization of side effects. In functional programming, side effects are rarely used. Functional languages such as Standard ML, Scheme and Scala do not restrict side effects, but it is customary for programmers to avoid them. The functional language Haskell restricts side effects with a static type system; it uses the concept of monads to do stateful and IO computations.

Suggested Resources

  1. side effect

    Song lyrics by side effect -- Explore a large variety of song lyrics performed by side effect on the Lyrics.com website.


  1. Chaldean Numerology

    The numerical value of side effect in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of side effect in Pythagorean Numerology is: 1

Sample Sentences & Example Usage

  1. Andre Hawit:

    Success is a side effect of doing the right things in the right time

  2. Jesus San Miguel:

    Incidence of side effects is low, but could be due to limited exposure to the drug so far, the side effect profile is pretty good.

  3. Derek Raghavan:

    If Drug B costs 70 percent of Drug A, but has a side effect profile that brings every second patient to the hospital for a four-day admission, then it does not have value.

  4. Ryan Marsh:

    Since he’s been on this new drug, the main side effect is muscle cramping, and that’s just something almost a normal person would experience with some of the things he does, but he seems to do a good job of dialing back the intensity when [the muscle cramps] come back.

  5. Kara Richardson Whitely:

    Maybe they'll buy my book, but also leave with a little something to get them on their way to their own adventure, maybe it's a water bottle, which is where I started my first journey, with a Naglene, or a trail book. The side effect will be that more people are actually get out and feeling comfortable being part of this club, this group.

Images & Illustrations of side effect

  1. side effectside effectside effect

Translations for side effect

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"side effect." Definitions.net. STANDS4 LLC, 2018. Web. 17 Feb. 2018. <https://www.definitions.net/definition/side effect>.

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