Ev`a*nes"cent (?), a. [L.
evanescens, -entis, p. pr. of evanescere.]
1. Liable to vanish or pass away like vapor;
vanishing; fleeting; as, evanescent joys.
So evanescent are the fashions of the world in
these particulars.
Hawthorne.
2. Vanishing from notice;
imperceptible.
The difference between right and wrong, is some petty
cases, is almost evanescent.
Wollaston.