proptosis

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/prɒpˈtəʊsɪs/US:USA pronunciation: respellingUSA pronunciation: respelling(prop tō′sis)


WordReference Random House Unabridged Dictionary of American English © 2026
prop•to•sis  (prop tō′sis),USA pronunciation n. [Pathol.]
  1. Pathologythe forward displacement of an organ.
  2. Pathologyexophthalmos.
  • Greek próptōsis a fall forward. See pro-2, ptosis
  • Neo-Latin
  • 1670–80;
prop•tosed  (prop′tōst),USA pronunciation prop•tot•ic  (prop tot′ik),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
proptosis /prɒpˈtəʊsɪs/ n ( pl -ses /-siːz/)
  1. the forward displacement of an organ or part, such as the eyeball
    See also exophthalmos
    Compare prolapse
Etymology: 17th Century: via Late Latin from Greek, from propiptein to fall forwards
'proptosis' also found in these entries (note: many are not synonyms or translations):
prolapse

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