Meaning of PETROLATUM in English

PETROLATUM

( n. )

A semisolid unctuous substance, neutral, and without taste or odor, derived from petroleum by distilling off the lighter portions and purifying the residue. It is a yellowish, fatlike mass, transparent in thin layers, and somewhat fluorescent. It is used as a bland protective dressing, and as a substitute for fatty materials in ointments.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.