- a drooping of the upper eyelid.
- prolapse or drooping of any organ.
Origin of ptosis
Examples from the Web for ptosis
This was diagnosed as ptosis of his organs, and an operation was done to tuck these up.Psychotherapy
James J. Walsh
Eye-strain is another; ptosis, or falling of the organs, is another.Outwitting Our Nerves
Josephine A. Jackson and Helen M. Salisbury
Frequent transitory or permanent strabismus or ptosis, one or both.Neuralgia and the Diseases that Resemble it
Francis E. Anstie
There was marked proptosis, subconjunctival ecchymosis, swelling and ecchymosis of the upper lid, and ptosis.Surgical Experiences in South Africa, 1899-1900
George Henry Makins
Ptosis and lateral squint, with a fixed and dilated pupil, indicates pressure on the oculo-motor nerve of the same side.
- prolapse or drooping of a part, esp the eyelid
Word Origin and History for ptosis
1743, from Greek ptosis, literally "falling, a fall," also "the case of a noun," nominal derivative of piptein "to fall" (see symptom). In English, especially of the eyelid. Related: Ptotic.
- Abnormal lowering or drooping of an organ or part, especially a drooping of the upper eyelid caused by muscle weakness or paralysis.