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mask medical definition
noun
- A covering for the nose and mouth that is used for inhaling oxygen or an anesthetic.
- A covering worn over the nose and mouth, as by a surgeon or dentist, to prevent infection.
- A facial bandage.
- Something, often a trait, that disguises or conceals.
- Any of a variety of conditions producing alteration or discoloration of the skin of the face.
- An expressionless appearance of the face seen in certain diseases, such as Parkinsonism.
- To cover with a protective mask.
- To cover in order to conceal, protect, or disguise.
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