Art Glossary: Blending

Mark making in painting
In this detail from a pastel painting, the colors on the forehead have been blended to give a smooth skin tone. Photo © 2010 Marion Boddy-Evans. Licensed to About.com, Inc.

Definition:

Blending is the technique of painting colors so that there is a gentle and gradual transition from one to the other. To blend without adding more paint, put aside the brush you have been using and use a dry, clean, soft brush to go over the paint before it's completely dry. Don't press too hard, it's more like a rapid flick across the surface.

Double-loading a brush has the effect of blending two colors together as the brushstroke is made.

See Also:
How to Blend Paint Colors
How to Load a Flat Brush with Two Colors