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pterygium

[tuh-rij-ee-uh m] /təˈrɪdʒ i əm/
noun, plural pterygiums, pterygia
[tuh-rij-ee-uh] /təˈrɪdʒ i ə/ (Show IPA).
Ophthalmology.
1.
an abnormal triangular mass of thickened conjunctiva extending over the cornea and interfering with vision.
Origin of pterygium
1650-1660
1650-60; < New Latin < Greek pterýgion little wing or fin, equivalent to pteryg- (stem of ptéryx) wing, fin + -ion diminutive suffix
Related forms
pterygial, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for pterygial

pterygial

/təˈrɪdʒɪəl/
adjective
1.
(zoology) of or relating to a fin or wing
Word Origin
from Greek pterux wing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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pterygial in Medicine

pterygium pte·ryg·i·um (tə-rĭj'ē-əm)
n. pl. pte·ryg·i·ums or pte·ryg·i·a (-ē-ə)
An abnormal mass of tissue arising from the conjunctiva of the inner corner of the eye that obstructs vision by growing over the cornea.


pte·ryg'i·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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