Definition of day blindness in English:

day blindness

noun

Biology Medicine
  • The condition in which vision is impaired in daylight or bright light, and improved in dim light.

Origin

Late 16th century. From day + blindness, after Hellenistic Greek ἡμεράλωψ (adjective) blind in the daytime.

Pronunciation

day blindness

/ˈdeɪ ˌblʌɪn(d)nɪs/