pet·ro·la·tum /ˌpɛtrəˈletəm, ˈlɑ-/
凡士林油,礦油
pet·ro·la·tum /ˌpɛtrəˈletəm, ˈlɑt-/ 名詞
Pet·ro·la·tum n. Chem. & Pharm. 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.
Note: ☞ Petrolatum is the official name for the purified product. Cosmoline and vaseline are commercial names for substances essentially the same, but differing slightly in appearance and consistency or fusibility.
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petrolatum
n : a semi-solid mixture of hydrocarbons obtained from
petroleum; used in medicinal ointments and for
lubrication [syn: petroleum jelly, mineral jelly]