硝煙反応 しょうえんはんのう Meanings Noun chemical reaction used to detect residue from gunshots gunpowder residue; gun shot residue; GSR Kanji 硝 nitrate. Read as ショウ. 煙 smoke. Read as エン. 反 anti-. Read as ハン. 応 respond. Read as ノウ. Jinuma: Japanese Dictionary · Word lists