性機能 せいきのう Meanings Noun sexual function Kanji 性 nature. Read as セイ. 機 machine 能 ability. Read as ノウ. Words containing 性機能 性機能障害 (せいきのうしょうがい) sexual dysfunction 性機能不全 (せいきのうふぜん) sexual dysfunction 不活性機能文字 (ふかっせいきのうもじ) inert function character Word lists Medicine Jinuma: Japanese Dictionary · Word lists