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proptosis definition

prop·to·sis (präp tō′sis)

noun pl. proptoses -·ses′ (-sēz′)

Med. a forward or downward displacement; protrusion, as of the eyeball

Etymology: ModL < LL < Gr proptōsis < propiptein, to fall forward < pro-, before (see pro-) + piptein, to fall: see feather

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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