Definition of proptosis in English:

proptosis

Syllabification: prop·to·sis
Pronunciation: /präpˈtōsəs
 
/

noun

Medicine
  • Abnormal protrusion or displacement of an eye or other body part.
    More example sentences
    • Signs of orbital injury include periorbital ecchymosis, edema, proptosis, and bony step-offs of the orbital rim.
    • The skull is a frequent site of bone metastases, which commonly present as proptosis and periorbital ecchymoses.
    • 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.

Origin

late 17th century: via late Latin from Greek proptōsis, from pro 'before' + piptein 'to fall'.

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a small amount; a little