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noctilucent

[ nok-tuh-loo-suhnt ]

adjective

, Meteorology.
  1. (of high-altitude clouds) visible during the short night of the summer.

noctilucent

/ ˌnɒktɪˈluːsənt /

adjective

  1. shining at night, usu. of very thin high altitude clouds observable in the summer twilight sky

noctilucent

/ nŏk′tə-lo̅o̅′sənt /

  1. Luminous at night. The term is used especially to describe certain high atmospheric cloud formations visible during summer nights at high latitudes.

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Derived Forms

  • ˌnoctiˈlucence, noun

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Other Words From

  • nocti·lucence noun

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Word History and Origins

Origin of noctilucent1

First recorded in 1885–90; nocti- + lucent

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noctilucanoctis

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