性成熟 せいせいじゅく Meanings Noun sexual maturation Kanji 性 nature. Read as セイ. 成 become. Read as セイ. 熟 ripe. Read as ジュク. Words containing 性成熟 親和性成熟 (しんわせいせいじゅく) affinity maturation Jinuma: Japanese Dictionary · Word lists