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Hariolation vs Variolation - What's the difference?

hariolation | variolation |

As nouns the difference between hariolation and variolation

is that hariolation is prognostication; soothsaying while variolation is the inoculation of a person with smallpox so as to induce a mild form of the illness and subsequent immunity to it.

hariolation

English

Noun

(en noun)
  • (obsolete) prognostication; soothsaying
    • (Cockeram)
    (Webster 1913)

    variolation

    English

    Noun

    (en noun)
  • (historical) The inoculation of a person with smallpox so as to induce a mild form of the illness and subsequent immunity to it.