Definition of ptosis in English:

Share this entry


Pronunciation: /ˈtōsəs/


Drooping of the upper eyelid due to paralysis or disease, or as a congenital condition.
Example sentences
  • The first sign frequently presents as ocular muscle weakness resulting in diploplia (double vision) and/or ptosis (drooping eyelid).
  • Symptoms include nasal congestion, ptosis of one eyelid, miosis, and conjunctional hyperemia.
  • On physical examination, slight proptosis of the left eye and ptosis of the left upper eyelid were noted.



Pronunciation: /ˈtōˌtik/ /ˈtätik/
Example sentences
  • Occasionally, the small volume of TRAM tissue cannot fulfill the requirements for breast symmetry, especially in those patients with limited abdominal tissue and large ptotic breasts.
  • This flap also permits large ptotic breasts to be reconstructed without recourse to breast implants.
  • In older patients, these glands may become ptotic and appear more prominent.


Mid 18th century: from Greek ptōsis, from piptein 'to fall'.

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.