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nacreous cloud

  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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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

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