Imprimatura

Imprimatura is a term used in painting, meaning an initial stain of color painted on a ground. It provides a painter with a transparent, toned ground, which will allow light falling onto the painting to reflect through the paint layers. The term itself stems from the Italian and literally means "first paint layer". Its use as an underpainting layer can be dated back to the guilds and workshops during the Middle Ages; however, it comes into standard use by painters during the Renaissance, particularly in Italy.