chemosterilant

noun

che·​mo·​ster·​il·​ant ˌkē-mō-ˈster-ə-lənt also ˌkem-ō- 

: a substance that produces irreversible sterility (as of an insect) without marked alteration of mating habits or life expectancy

chemosterilization noun

or British chemosterilisation

-ˌster-ə-lə-ˈzā-shən 

chemosterilize verb

or British chemosterilise

-ˈster-ə-ˌlīz 

chemosterilized or British chemosterilised; chemosterilizing or British chemosterilising