mushroom cloud
Specifically refers to the mushroom-shaped cloud from a nuclear explosion or large blast.
A mushroom cloud rose over Hiroshima.
核実験で巨大なキノコ雲が発生した。
A huge mushroom cloud was produced by the nuclear test.
Hiragana-kanji variant; less common but still seen.
Rare kanji form using 茸; it is rarely used.
Compound of キノコ (mushroom) and 雲 (cloud), from the resemblance to a mushroom cap and stem.