nacreous cloud en · NOUN
Meanings
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A polar stratospheric cloud.
Nacreous clouds, also known as polar stratospheric clouds, are not commonly observed because of the remote locations and high altitudes where they form. These clouds are also called "mother-of-pearl clouds" in reference to their vivid iridescent appearance.
2008, Eric M. Wilcox, Clouds, page 166:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| nacreous clouds | Number=Plur | lexicographic |