nacreous cloud

American

noun

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

nacreous cloud Scientific

/ nā′krē-əs /

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.

Other Word Forms

Noun Inflected Forms

nacreous clouds

plural

Example Sentences

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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

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023