ptosis

[ toh-sis ]

noun

, Pathology.

1. a drooping of the upper eyelid.
2. prolapse or drooping of any organ.

ptosis

/ ˈtəʊsɪs; ˈtɒtɪk /

noun

1. prolapse or drooping of a part, esp the eyelid

Derived Forms

• ptotic, adjective

Other Words From

• pto·tic [toh, -tik], adjective

Word History and Origins

Origin of ptosis¹

1735–45; < New Latin < Greek ptṓsis a falling

Word History and Origins

Origin of ptosis¹

C18: from Greek: a falling

Example Sentences

This process is called pyroptosis, from the Latin "pyro" for fire and the Greek "ptosis" for falling off, like the leaves of a tree.

From Salon

Madiysn has been diagnosed with visual impairments – alternating exotropia, convergence insufficiency and ptosis.

From Washington Times

Weller discovered that he had nearly every MG symptom listed except the most common: double vision and droopy eyelids known as ptosis.

From Washington Post

A classic sign of this is ptosis, when people can't keep their eyes open.

From BBC

The 2-year-old from the Ivory Coast was born with closed eyelids, a condition known as bilateral congenital eyelid ptosis, often referred to as drooping eyelids.

From Washington Times