international age noun2 •An age system where a person is considered zero years old at birth, and adds one to their age on their birthday.Take “Gangnam Style” singer Psy, for example. Born on December 31, 1977, he is considered 45 by international age; 46 by calendar year age; and 47 by Korean age. — 2023 •One's age under this system.Yoon Jae-ha, left, shows his international age of eight and Korean age of nine next to his father, Yoon Dong-gun, whose international age is 43 and Korean age is 44 — 2023 formsinternational ages
