Definition of microbicidal in US English:

microbicidal

adjective

Biology
  • That kills microbes; of or relating to a microbicide or its action.

Origin

Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From microbicide + -al; compare -icidal.

Pronunciation

microbicidal

/mʌɪˌkrəʊbɪˈsʌɪdl/