1) Inoculating 2) Vaccinating 3) Variolization 1) Variolization 
Variolation or Inoculation was the method first used to immunize an individual against smallpox (Variola) with material taken from a patient or a recently variolated individual in the hope that a mild but protective infection would result. The procedure was most commonly carried out by inserting/rubbing powdered smallpox scabs or fluid from pustul...
• (n.) Inoculation with smallpox.
obsolete method of immunizing patients against smallpox by infecting them with substance from the pustules of patients with a mild form of the ... [2 related articles]
Va`ri·o·la'tion noun (Medicine) Inoculation with smallpox. 
Type: Term Pronunciation: var′ē-ō-lā′shŭn Definitions: 1. The obsolete process of inoculating a susceptible person with material from a vesicle of a patient with smallpox. Synonyms: variolization
Variolation: The old practice of inoculating someone with the virus of smallpox to produce immunity to the disease. Lady Mary Wortley Montagu introduced this practice into England from Turkey in 1721. Unfortunately, the identification of a suitable strain of the virus was not an exact science and grievous disease and death from variolation were not...
n. Accepting, admitting, or tolerating a small amount of something negative in order to avoid a larger amount of the same negative. Based on the obsolete word used to describe the action of infecting a person with a small amount of smallpox in order to bring about an immune response.
the historical practice of inoculating a healthy patient with infectious material from a person infected with smallpox in order to promote immunity to the disease
variolization noun the obsolete process of inoculating a susceptible person with material taken from a vesicle of a person who has smallpox