性反応 せいはんのう Meanings Noun, Noun suffix reaction; response Kanji 性 nature. Read as セイ. 反 anti-. Read as ハン. 応 respond. Read as ノウ. Words containing 性反応 陽性反応 (ようせいはんのう) positive reaction 陰性反応 (いんせいはんのう) negative reaction (in patient) 酸性反応 (さんせいはんのう) acid reaction And 1 more. Jinuma: Japanese Dictionary · Word lists