Gum arabic

The binder used in watercolors, gum tempera and ceramics for glaze, it is, made from the gum of the acacia tree, which is traditionally associated with Arabia. Source: Ralph Mayer, "A Dictionary of Art Terms and Techniques"<br><br>A gum, extracted fro Acacia trees, used in solution as a medium for watercolor paints.<br><br>Gum arabic is produced from the sap of the African acacia tree and is available in crystalline form or an already prepared solution. It binds watercolor pigments when used with water and glycerine or honey.