sterilize

[1]	purify , sterilise , disinfect , cleanse , clean , fumigate , depurate , (Technical) autoclave
[2]	castrate (males) , sterilise , desex , emasculate (males) , geld (horses) , unsex , desexualize , spay (female animals) , alter (animals) , desexualise , fix , neuter (animals) , caponize (male fowl) , eunuchize (males) , (Technical) ovariectomize (females) , vasectomize (males) , (Colloq) fix (animals) , cut (male animals) , (Slang) tie (someone's) tubes