ptosis

 
Pronunciation: /ˈtəʊsɪs/

noun

[mass noun] Medicine
  • drooping of the upper eyelid due to paralysis or disease, or as a congenital condition.

Derivatives

ptotic

Pronunciation: /ˈtəʊtɪk/
adjective

Origin:

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