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 From Sino-Korean 成 (seong) meaning "completed, finished, succeeded" or 盛 (seong) meaning "abundant, flourishing" combined with 珠 (ju) meaning "jewel, pearl" or 周 (ju) meaning "circumference". Other hanja combinations can form this name as well.