ptosis /tōˈsis or ptōˈsis/ (medicine)

1. Downward displacement
2. Drooping of the upper eyelid

• cathetus
• cathetuses
• cathexes
• cathexis
• cathinone
• cathinones
• cathisma
• cathismas
• cathodal
• cathode
• cathode-ray oscillograph
• cathode-ray oscillographs
• cathode rays
• cathode-ray tube
• cathode-ray tubes
• cathodes
• cathodic
• cathodic protection
• cathodograph
• cathodographer
• cathodographers
• cathodographies
• cathodographs
• cathodography
• cathodoluminescence