Definitions for "Drying oil"
Keywords:  tough, tung, linseed, soybean, varnish
An oil that absorbs oxygen and changes into a tough film upon exposure to air when it is applied in thin layers.
Oils, derived from certain plants and which dry to a solid in the open air, provide good protective coating for wood.
An organic liquid which, when applied as a thin film, readily absorbs oxygen from the air and polymerises to form a tough elastic film. Linseed, tung, soybean and castor oils are drying oils. Under certain conditions, usually involving large surface areas and insulation, such as a pile of rags soaked with drying oils, spontaneous heating may occur.