petrolatum

Definition / meaning of petrolatum

A thick, greasy, substance with no odor or taste made from petroleum (mixture of oily liquids found in the earth). Petrolatum is used on the skin to prevent drying and to help heal scrapes and burns. It is also used as a base for some ointments. Also called petroleum jelly.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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