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An effect following its cause after some delay, especially a delayed or prolonged physiological or psychological response to a stimulus.


1. any result occurring some time after its cause
2. (Medicine) med any delayed response to a stimulus or agent. Compare side effect
3. (Psychology) psychol any illusory sensation caused by a stimulus that has ceased


(ˈæf tər ɪˌfɛkt, ˈɑf-)

a delayed effect, as one that follows at some interval after the stimulus that produced it.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.aftereffect - any result that follows its cause after an intervalaftereffect - any result that follows its cause after an interval
consequence, effect, result, upshot, outcome, event, issue - a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event"
2.aftereffect - a delayed effect of a drug or therapyaftereffect - a delayed effect of a drug or therapy; "the drug had unexpected aftereffects"
effect - a symptom caused by an illness or a drug; "the effects of sleep loss"; "the effect of the anesthetic"
References in periodicals archive ?
Matsumiya hypothesized that if the visual system really does respond to signals from another modality, then we should see evidence for face aftereffects from one modality to the other.
To add nuance to the simplicity that this model might suggest, Bellamy focuses on the processes of condensation by which the epic tries to appropriate romance - not simply an "imperialist" appropriation but one which produces "a generic edge by means of which the aftereffects of a romance unconscious leave their repressed, but nonetheless observable, traces" (32).
We're just not through yet with the aftereffects of all the people who used creative financing to buy homes beyond their means.
At some point in the future, she may need to have something done again because of the steroid aftereffects, officials said.
At twenty million people and counting, theirs--as many an exhibition press release has stated--is a megalopolis of extremes, characterized by vast disparities in wealth, the aftereffects of colonialism, and changes wrought by NAFTA.
It may be showcasing the aftereffects of an already epidemic shortage of proper tutelage in the three R's, but if anything, the Inter net is helping to rectify the scourge of bad schooling by forcing us to express ourselves in print.
The Governor added: "I am still struggling to understand its implications in terms of its economic aftereffects and the lessons we must all learn.
This disincentive, coupled with some other lingering aftereffects of the recession, have forced U.
NYSE: ACI) announced today that its results for the first quarter of 1994 would be substantially affected by severe winter weather during January and the operational aftereffects of the recent strike by the United Mine Workers of America.
Compared to experiments in which the same observers fixed their gaze on the letters and numbers without having to take any action, the duration of motion aftereffects dropped by almost 70 percent after attention was directed to the appearance of numbers.
Ryan Choi, a 25-year-old Los Angeles resident, likes the rain for its aftereffects.
The visitors strolled between the walls of the rectangular structures, which resembled half-demolished houses - the aftereffects of a disaster.