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.

2. Vanishing from notice; imperceptible.

The difference between right and wrong, is some petty cases, is almost evanescent.