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pterygium

[ tuh-rij-ee-uhm ]
/ təˈrɪdʒ i əm /
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noun, plural pte·ryg·i·ums, pte·ryg·i·a [tuh-rij-ee-uh]. /təˈrɪdʒ i ə/. Ophthalmology.

an abnormal triangular mass of thickened conjunctiva extending over the cornea and interfering with vision.

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Origin of pterygium

1650–60; <New Latin <Greek pterýgion little wing or fin, equivalent to pteryg- (stem of ptéryx) wing, fin + -ion diminutive suffix

OTHER WORDS FROM pterygium

pte·ryg·i·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use pterygium in a sentence

Medical definitions for pterygium

pterygium
[ tə-rĭjē-əm ]

n. pl. pte•ryg•i•ums

An abnormal mass of tissue arising from the conjunctiva of the inner corner of the eye that obstructs vision by growing over the cornea.

Other words from pterygium

pte•rygi•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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