From Longman Dictionary of Contemporary Englishchemical warfareˌchemical ˈwarfare noun [uncountable] PMWmethods of fighting a war using chemical weapons
Examples from the Corpus
chemical warfare• The outbreak of a new war made defence against chemical warfare agents once again an urgent problem.• The only other type of mammal to employ chemical warfare is the duck-billed platypus.• Unlike snakes, lizards have not specialised in chemical warfare.• But the war was over, and the pressure to investigate chemical warfare agents disappeared.• The Soviet Union's response has been a relentless increase in its chemical warfare capability.• There was also the threat of chemical warfare.• It was during the episode of Supersense on chemical warfare and trap strategy. 