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Pronunciation: of're-o'sis

Definition: Spasmodic twitching of the upper portion of the orbicularis palpebrarum muscle causing a wrinkling of the eyebrow.

[G. ophrys, eyebrow, + -osis, condition]

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.