to claim (something) back; to recover (something)
to make (land) available for human use by changing natural conditions
to obtain (a useful substance) from a waste product
literary to convert or reform (somebody) from an undesirable state
reclaimable adj
reclaimer noun
reclamation /rekləʹmaysh(ə)n/ noun
[Middle English reclamen via Old French reclamer to call back, from Latin reclamare to cry out against, from re- + clamare to cry out, claim1]