nacreous cloud

/neɪkriəs ˈklaʊd/ (say naykreeuhs 'klown)

noun
cirrus cloud which is lit by the sun when it is several degrees below the horizon, resulting in an iridescent colouring.

Australian English dictionary. 2014.

Look at other dictionaries:

  • nacreous cloud — noun a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon • Syn: ↑mother of pearl cloud • Hypernyms: ↑cloud * * * noun : a luminous iridescent cloud that occurs at altitudes of about… …   Useful english dictionary

  • nacreous cloud — a rarely seen, luminous, iridescent cloud shaped like a cirrus or altocumulus, approximately 15 mi. (24 km) above the earth, and of unknown composition. Also called mother of pearl cloud. * * * …   Universalium

  • nacreous cloud — A highly layered cloud with an iri descent appearance. It is akin to high altitude cirrus clouds. Also called a mother of pearl cloud. Clouds of unknown composition, whose form resembles that of cirrus or altocumulus lenticularis. These clouds… …   Aviation dictionary

  • nacreous cloud — noun polar stratospheric cloud …   Wiktionary

  • Cloud — For other uses, see Cloud (disambiguation). Cumulus cloudscape over Swifts Creek, Australia A cloud …   Wikipedia

  • Cloud atlas — For other uses, see Cloud atlas (disambiguation). A cloud atlas is a pictorial key to the nomenclature of clouds. Early cloud atlases were an important element in the training of meteorologists and in weather forecasting, and the author of a 1923 …   Wikipedia

  • Cloud condensation nuclei — Aerosol pollution over Northern India and Bangladesh NASA Cloud condensation nuclei or CCNs (also known as cloud seeds) are small particles typically 0.2 µm, or 1/100 th the size of a cloud droplet [1]) about which cloud droplets coalesce. Water… …   Wikipedia

  • mother-of-pearl cloud — noun a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon • Syn: ↑nacreous cloud • Hypernyms: ↑cloud * * * noun : nacreous cloud * * * mother of pearl cloud, = nacreous cloud. (Cf …   Useful english dictionary

  • polar stratospheric cloud — noun A relatively rare type of clouds that occurs high in the stratosphere; polar stratospheric clouds often resemble mother of pearl as they shine in vivid colours, known as irisation Syn: mother of pearl cloud, nacreous cloud …   Wiktionary

  • mother-of-pearl cloud. — See nacreous cloud. [1930 35] * * * …   Universalium

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