환원이 · 환원을
reduction (chemistry); return, giving back
Example
그 회장은 재산을 사회에 환원하기로 했어요.
The chairman decided to give his fortune back to society.
Word parts
환 return+원 origin
Literally 'returning to the origin'.
Good to know
In chemistry it pairs with 산화 (oxidation); in daily news, 사회에 환원하다 means giving wealth back to society.
Related words