ppl. a. [f. EVANESCE + -ING2.] That passes quickly away.

1

1805.  Med. Jrnl., XIV. 537. Symptomatic fever of a mild nature took place about the 9th day, and the usual evanescing course followed.

2

1847.  Emerson, Repr. Men, Swedenborg, Wks. (Bohn), I. 328. It is dangerous to sculpture these evanescing images of thought.

3