Definition of "retinitis" [ret•i•ni•tis]

• Inflammation of the retina. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "About one in 3,000 people are blind due to one of this group of hereditary diseases, called retinitis pigmentosa, and might potentially benefit from the artificial retina."
• "She was born with a disorder called retinitis pigmentosa, a disorder that has impaired her vision since the day she was born."
• "The only documented harmful effect of too much vitamin E is the worsening of a rare eye problem known as retinitis pigmentosa."