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from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Forward displacement of an organ, especially an eyeball.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. exophthalmos

from The Century Dictionary and Cyclopedia

  • n. Prolapse or protrusion, as of the eyeball.


Late Latin proptōsis, prolapse, from Greek, from propiptein, proptō-, to fall forward : pro-, forward; see pro-2 + piptein, to fall; see pet- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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