cirrocumulus cloud; mackerel sky
Refers to high-altitude clouds that look like fish scales. Often used in weather contexts or poetic descriptions.
See also: 巻積雲
Cirrocumulus clouds are spread across the whole sky.
When cirrocumulus clouds appear, the weather often turns bad.
Standard kanji-kana mixed spelling; うろこ is often written in kana for this word.
Full kanji spelling; less common but still seen.
Compound of うろこ (scale) + 雲 (cloud), from the scale-like appearance of the clouds.