亜酸化窒素 あさんかちっそ Meanings Noun nitrous oxide (N2O) See also: 笑気 (しょうき). Kanji 亜 sub-. Read as ア. 酸 acid. Read as サン. 化 transform 窒 choke. Read as チツ. 素 element. Read as ソ. Word lists Chemistry Jinuma: Japanese Dictionary · Word lists