A solid plastic or pliable liquid substance, such as ozocerite or paraffin, originating from petroleum and found in rock layers and used in paper coating, as insulation, in crayons, and often in medicinal preparations.
Any of various natural, oily or greasy heat-sensitive substances, consisting of hydrocarbons or esters of fatty acids that are insoluble in water but soluble in nonpolar organic solvents.