inoculate
v. US //ˌɪˈnɑkjəˌɫeɪt// UK //ɪnˈɒkjʊlˌeɪt// in·oc·u·late
First attested in c. 1440; inherited from Middle English inoculaten (“to graft”), from Latin inoculātus, perfect passive participle of inoculō (“to ingraft an eye or bud of one plant into (another), implant”) (see -ate (verb-forming suffix)), from in- (“in”) + oculus (“an eye”) + -ō (verb-forming suffix).
Back-formation from inoculation, see -ate (noun-forming suffix).