Replacement of malfunctioning organ by a healthy organ is called?

Replacement of malfunctioning organ by a healthy organ is called?

ناکارہ عضو کو صحت مند عضو سے بدلنا کیا _____ کہلاتا ہے؟
Explanation

Transplantation is the replacement of a diseased or damaged organ with a healthy one from a donor.