petrolatum is a topic covered in the Taber's Medical Dictionary.

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(pe″trŏ-lāt′ŭm )

[petroleum + -ate]
A purified semisolid mixture of hydrocarbons obtained from petroleum. This occlusive substance is used as a base for ointments. It is not suitable for use as a vaginal lubricant because it is not miscible in body secretions.
SYN: SEE: soft paraffin

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