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1. (Science: anatomy) The prolapse of an organ or part.
2. (Science: clinical sign) The drooping of the upper eyelid from paralysis of the third nerve or from loss of sympathetic innervation.
Origin: Gr. Ptosis = fall
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This page was last modified on 3 October 2005, at 21:16. This page has been accessed 2,722 times. What links here
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