defedation
noun
def·e·da·tion
ˌdefə̇ˈdāshən
variants or less commonly defoedation
plural -s
archaic
: pollution, defiling
Word History
Etymology
Middle French, from Late Latin defoedatus (past participle of defoedare to pollute, from Latin de- + foedare to make ugly or filthy, from foedus ugly, filthy) + Middle French -ion