what do you mean by redemption of debentures?

Redemption of Debentures is a process of repayment of loan taken by issue of debentures.

redemtion of debentures simply  means that the "repayment" ...at the time of issue of debentures

 edemption of debenture means repayment of the amount tof debentures to debentureholders.. 

Redemption of debentures means that the principal amount which the company had raised by way of debentures is being repayed to the debentureholders (borrowers) after the expiry of debenture contract.