coun·ter·mea·sure 
/ˈkaʊntɚˌmɛʒɚ/ noun
plural coun·ter·mea·sures /ˈkaʊntɚˌmɛʒɚ/ noun [count] : an action or device that is intended to stop or prevent something bad or dangerous — usually plural ▪ new countermeasures against terrorism ▪ The army used electronic countermeasures to block enemy radar.
