debriding

/D EH1 B R AY1 D IH0 NG/
verb
  1. 1

    To remove necrotic tissue or foreign matter from (a wound or the like).

noun
  1. 1

    The removal of necrotic tissue or foreign matter from a wound, etc.

Source: https://en.wiktionary.org/wiki/debride, https://en.wiktionary.org/wiki/debriding