syphilization
/ˌsɪfɪlʌɪˈzeɪʃn/(also syphilisation) Medicine
noun
Originally: inoculation with material from a syphilitic lesion, as a (supposed) method of prevention or treatment for syphilis (now historical ). In later use also: infection with syphilis.
Origin
Mid 19th century; earliest use found in The Lancet. From syphilize + -ation, after French syphilisation.