reprocessing

Short definition from Wiktionary

Verb

1. 1
   present participle and gerund of reprocess

Noun

1. 1
   A second or subsequent processing.
2. 2
   The process of extracting useful or valuable materials from used nuclear fuel, mainly focusing on the recovery of fissile and fertile material for use in fresh nuclear reactor fuel, or, in some cases, the manufacture of nuclear weapons.