Etymology of the English word ptosis
the English word
ptosisderived from the Greek word
ptosis, πτῶσις (falling; fall; a crash; downfall)
derived from the Greek word
piptein, πίπτω
derived from the Proto-Indo-European root
*pet-Date
The earliest known usage of ptosis in English dates from the 18th century.
Derivations in English
cladoptosisUsage
Word found in Modern English
