火災積乱雲 かさいせきらんうん Meanings Noun pyrocumulonimbus (cloud) Kanji 火 fire. Read as カ. 災 disaster. Read as サイ. 積 pile up. Read as セキ. 乱 disorder. Read as ラン. 雲 cloud. Read as ウン. Jinuma: Japanese Dictionary · Word lists