蒸

steam, heat, sultry, foment, get musty

Kun

むす · むれる · むらすmusu · mureru · murasu

On

ジョウ · セイjou · sei

Kun is the Japanese reading, used when the kanji stands alone with kana after it. On comes from Chinese and is mostly used in compound words.

Radical

艸grass

Parts

⺾grassform of 艸一one亅hook灬fireform of 火