Save Gender Feminine Usage Japanese Scripts 聖子, etc.(Japanese Kanji) せいこ(Japanese Hiragana) Pronounced Pron. SEH-KO [key·IPA] Meaning & History From Japanese 聖 (sei) meaning "holy, sacred" combined with 子 (ko) meaning "child". Other kanji combinations can also form this name. Related NamesFamily Tree·Details VariantKiyoko Categories child meaning, isograms