de·bride·ment 
(dā′brēd-mäɴ, dĭ-brēdmənt)
(dā′brēd-mäɴ, dĭ-brēdmənt)n.
Surgical excision of dead, devitalized, or contaminated tissue and removal of foreign matter from a wound.
[French débridement, from débrider, to unbridle, debride (from the likening of constricting bands of tissue to bridles), from Old French desbrider : des-, de- + bride, bridle (probably from Middle High German brīdel, rein).]
de·bride v.