S: (n) superoxide dismutase, SOD (an enzyme that catalyzes the conversion of superoxide into hydrogen peroxide and oxygen) "oxygen free radicals are normally removed in our bodies by the superoxide dismutase enzymes"
S: (n) sodomite, sodomist, sod, bugger (someone who engages in anal copulation (especially a male who engages in anal copulation with another male))
S: (n) guy, cat, hombre, bozo, sod (an informal term for a youth or man) "a nice guy"; "the guy's only doing it for some doll"; "the poor sod couldn't even buy a drink"