Save Gender Masculine & Feminine Usage Korean Scripts 성주(Korean Hangeul) 成珠, 盛珠, 成周, 盛周, ect.(Korean Hanja) Pronounced Pron. /sʌŋ.d͡ʑu/ [key·simplify] Meaning & History Alternate transcription of Korean Hangeul 성주 (see Seong-ju).