SFUMATO

Etymology

Noun

sfumato (usually uncountable, plural sfumatos)

In painting, the application of subtle layers of translucent paint so that there is no visible transition between colors, tones and often objects.

Source: Wiktionary

Sfu*ma"to, a. Etym: [It.] (Paint.)

Definition: Having vague outlines, and colors and shades so mingled as to give a misty appearance; -- said of a painting.

Source: Webster’s Unabridged Dictionary 1913 Edition