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aniridia in Medicine

aniridia

(ăn′ī-rĭdē-ə, ăn′ə-)
n.
  1. Congenital absence of all but the root of the iris.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.