Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

  • noun Prolapse or protrusion, as of the eyeball.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun exophthalmos

Etymologies

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

[Late Latin proptōsis, prolapse, from Greek, from propiptein, to fall forward : pro-, forward; see pro– + piptein, ptō-, to fall; see pet- in Indo-European roots.]

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