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Definition of Ptosis
1. Noun. Drooping of the upper eyelid caused by muscle paralysis and weakness.
Definition of Ptosis
1. n. Drooping of the upper eyelid, produced by paralysis of its levator muscle.
Definition of Ptosis
1. Noun. The prolapse of a bodily organ, especially drooping of the eyelid. ¹
¹ Source: wiktionary.com
Definition of Ptosis
1. a drooping of the upper eyelid [n PTOSES] : PTOTIC [adj]