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intr.v. van·ished, van·ish·ing, van·ish·es
a. To pass out of sight, especially quickly; disappear. See Synonyms at disappear.
b. To pass out of existence: when the dinosaurs vanished from the earth.
2. Mathematics To become zero. Used of a function or variable.

[Middle English vanisshen, alteration of Old French esvanir, esvaniss-, from Vulgar Latin *exvanīre, alteration of Latin ēvānēscere : ē-, ex-, ex- + vānēscere, to vanish (from vānus, empty; see euə- in Indo-European roots).]

van′ish·er n.
van′ish·ing·ly adv.
van′ish·ment n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.vanishingly - so as to disappear or approach zero; "errors are vanishingly rare"
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References in periodicals archive ?
Right now when a woman or a couple is planning a pregnancy there are just vanishingly few genes in which mutations are common enough that it makes sense to say to that couple, "You know what?
Her condition was alternatively diagnosed as asthma or postviral wheeze but she was, said the coroner, suffering from a "vanishingly rare" tumour.
That's a vanishingly small percentage of the repairs completed each day in the U.S.
Despite that, the published repertoire for oboe and organ is vanishingly small.
Home Office pathologist Nat Cary, who examined the badly decomposed bodies, said it would be "vanishingly rare" for Holly to die like that and the account of Jessica's death was "wholly implausible".
However, a spokesman for the Meat and Livestock Commission said the risk of contaminated food getting into the UK was "vanishingly small".
But the likelihood of such a tit-for-tat scenario playing itself out is vanishingly small: There are lots of roads out there and lots of cars.
Here in the North East, UKIP councillors are vanishingly rare.
Zewail and colleagues, who developed a revolutionary 3-D microscope technique, moved high-resolution images of vanishingly small nanoscale objects from three dimensions to four dimensions when they discovered a way to integrate time into traditional electron microscopy observations.
But on closer inspection this turns out to be a reduction in the proportion of drivers who do not speed from 99.8% to 99.3% - vanishingly small, as Professor Stephen Stadling said when reviewing this "good news".
Further restrictions will simply require more public resources - this time to enforce where smokers stand while outside - for a vanishingly small improvement in public health.
Her condition was alternatively diagnosed as asthma or post-viral wheeze but she was, in fact, suffering from a "vanishingly rare" tumour.