nacreous cloud

American  

noun

nacreous clouds plural

1. Meteorology. a cloud that resembles a glowing, iridescent cirrus, most often seen when the sun is setting in northerly latitudes.

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nacreous cloud Scientific  

/ nā′krē-əs /

1. A cloud resembling a cirrus, showing iridescent coloration when the Sun is several degrees below the horizon. These clouds appear mostly during winter in regions of high latitude.

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Other Word Forms

Noun Inflected Forms

• nacreous clouds
  plural

Example Sentences

See Examples For:

nacreous cloud

Looking like a "portal to the next dimension" or possibly a spaceship, the shimmering colours of nacreous cloud were spotted.

From BBC ● Dec. 20, 2023