NYCTALOPIA

nyctalopia, night blindness, moon blindness

(noun) inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder

Source: WordNet® 3.1


Etymology

Noun

nyctalopia (countable and uncountable, plural nyctalopias or nyctalopiae)

(medicine) The inability to see clearly in dim light; night blindness

Anagrams

• polyactina

Source: Wiktionary


Nyc`ta*lo"pi*a, n. Etym: [L. nyctalopia, fr. nyctalops a nyctalops, Gr. (Med.) (a) A disease of the eye, in consequence of which the patient can see well in a faint light or at twilight, but is unable to see during the day or in a strong light; day blindness. (b) See Moonblink.

Note: Some writers (as Quain) use the word in the opposite sense, night blindness. See Hemeralopia.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

25 November 2024

ONCHOCERCIASIS

(noun) infestation with slender threadlike roundworms (filaria) deposited under the skin by the bite of black fleas; when the eyes are involved it can result in blindness; common in Africa and tropical America


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