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

10 June 2025

COMMUNICATIONS

(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”


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