Impasto
Pronunciation : Im*pas"to
Part of Speech : n.
Etymology : [It. See Impaste.] (Paint.)
Definition : Defn: The thickness of the layer or body of pigment applied by the painter to his canvas with especial reference to the juxtaposition of different colors and tints in forming a harmonious whole. Fairholt.
Source : Webster's Unabridged Dictionary, 1913