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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 ?
3% and a decrease in the percentage of discharge with aftereffects from 32.
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.
Upon removal of the perturbation, movement aftereffects were observed in the direction opposite of the force perturbation (e.
Enjoying a good scare may seem like fun at the time, but the aftereffects can be frightening, reveals communications specialist Glenn Sparks, author of Refrigerator Rights: Our Crucial Need for Close Relationships and Rolling in Dough: Lessons I Learned in a Doughnut Shop.
Summary: To this day, people from Halabja still suffer the aftereffects of the gas attack.
IT says a lot about Leslie Ash that despite having to live with the crippling aftereffects of MRSA, the enduring 'trout pout' label and her sister slagging her off at every opportunity, she still has a brilliant sense of fun.
WORLD number 14 Andy Murray insisted he had suffered no aftereffects from the wrist injury which had ruled him out since mid-May as he returned to claim a 6-4 6-4 victory in the first round of the Rogers Cup in Montreal.
High fuel costs and the aftereffects of the hurricanes continue to hamper the discounter's performance, executives said.
Having to deal with a debilitating psychological problem, Craver discovered remarkable healing approaches showing the reader how easy it is to recover from the aftereffects of traumatic experiences by using the right techniques.
Yates cited low investment returns, the growth of regulation, the aftereffects of the equities bear market and continuing weak bond yields.