One of the mysteries of the English language finally explained.
Abnormal protrusion or displacement of an eye or other body part.
- ‘Signs of orbital injury include periorbital ecchymosis, edema, proptosis, and bony step-offs of the orbital rim.’
- ‘A 35-year-old man presented with symptoms of decreased visual acuity, proptosis, and ptosis of the left eye that had lasted for 2 weeks.’
- ‘Significant clinical findings included 7 mm of proptosis on the right eye.’
- ‘A 66-year-old woman presented with headaches, left eye proptosis, and loss of vision from her left eye for 2 years.’
- ‘The skull is a frequent site of bone metastases, which commonly present as proptosis and periorbital ecchymoses.’
Late 17th century: via late Latin from Greek proptōsis, from pro ‘before’ + piptein ‘to fall’.
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