noun
: warfare involving the use of living organisms (as disease germs) and toxic substances produced by them against men, animals, or plants ; also : warfare involving the use of synthetic chemicals harmful to plants
noun
: warfare involving the use of living organisms (as disease germs) and toxic substances produced by them against men, animals, or plants ; also : warfare involving the use of synthetic chemicals harmful to plants
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012