If you want to know the bearer debentures definition then you can go through this article. The debentures that are to be paid to the bearer and whose names don't arrive or appear in the register of debenture holders are called Bearer Debentures. Coupons for interest are added to the document and interest is paid to the owners or holders as it falls due. Usually, these Bearer Debentures are exchangeable by mere or urgent delivery. These types of bonds are announced or issued financially, that is, on paper. And these bonds can be brought back in a period of 30 days from the due date printed. To know full details about debentures please visit the given link.