night blindness

noun

Definition of night blindness

: reduced visual capacity in faint light (as at night)

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Other Words from night blindness

night-blind \ ˈnīt-​ˌblīnd How to pronounce night-blind (audio) \ adjective

Examples of night blindness in a Sentence

Recent Examples on the Web

While rare, a true deficiency of vitamin A can lead to a condition called xerophthalmia, which can damage normal vision and result in night blindness—the inability to see in the dark or low light. Cynthia Sass, Mph, Health.com, "8 Health Benefits of Peaches," 7 Aug. 2019 Already, diseases such as night blindness and myopathy are affecting horses, experts say. Jason Bittel, National Geographic, "Speedy horses evolved only recently, says landmark equine study," 2 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'night blindness.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of night blindness

1625, in the meaning defined above

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Time Traveler for night blindness

The first known use of night blindness was in 1625

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More Definitions for night blindness

night blindness

noun

Medical Definition of night blindness

: reduced visual capacity in faint light (as at night)

called also nyctalopia

Other Words from night blindness

night-blind \ ˈnīt-​ˌblīnd How to pronounce night-blind (audio) \ adjective

More from Merriam-Webster on night blindness

Britannica.com: Encyclopedia article about night blindness

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