উদ্ধার, পুনরূদ্ধার, সংশোধন, শোধন, জীর্ণোদ্ধার, পঙ্কোদ্ধার
(1) The conversion of wasteland into land suitable for use of habitation or cultivation
(2) Rescuing from error and returning to a rightful course
(3) The recovery of useful substances from waste products
rehabilitation
renewal