vanish

v. disappear, cease to exist

This article is about the zeroes of a function, which should not be confused with the value at zero. You may also want information on the Nth roots of numbers instead. In mathematics, a root (or a zero) of a complex-valued function  is a member of the domain of such that vanishes at , that is, In other words, a "root" of a function is a value for that produces a result of zero ("0"). For example, consider the function defined by the following formula: This function has a root at 3 because 0.If the function is mapping from real numbers to real numbers, its zeros are the points where its graph meets the x-axis. In this situation, a root can be called an x-intercept.
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Verb
1. get lost, especially without warning or explanation; "He disappeared without a trace"
(synonym) disappear, go away
(hyponym) fall off, fall away
(derivation) vanisher
2. become invisible or unnoticeable; "The effect vanished when day broke"
(synonym) disappear, go away
(hypernym) end, stop, finish, terminate, cease
(hyponym) dematerialize, dematerialise
(derivation) vanisher
3. pass away rapidly; "Time flies like an arrow"; "Time fleeing beneath him"
(synonym) fly, fell
(hypernym) elapse, lapse, pass, slip by, glide by, slip away, go by, slide by, go along
(verb-group) fly, vaporize
4. cease to exist; "An entire civilization vanished"
(synonym) disappear
(hypernym) end, stop, finish, terminate, cease
5. decrease rapidly and disappear; "the money vanished in las Vegas"; "all my stock assets have vaporized"
(synonym) fly, vaporize
(hypernym) decrease, diminish, lessen, fall
(verb-group) fly, fell

(v. i.)
To pass from a visible to an invisible state; to go out of sight; to disappear; to fade; as, vapor vanishes from the sight by being dissipated; a ship vanishes from the sight of spectators on land.
  

(v. i.)
To be annihilated or lost; to pass away.
  

(n.)
The brief terminal part of vowel or vocal element, differing more or less in quality from the main part; as, a as in ale ordinarily ends with a vanish of i as in ill, o as in old with a vanish of oo as in foot.
  

bu2 yi4 er2 fei1
To fly without wings.
To disappear without trace. To vanish all of a sudden. To spread like wildfire.