variolation

名词 n.
中文释义

英文释义

名词 n.
  1. The inoculation of a person with smallpox with the intention of inducing a mild form of the illness and subsequent immunity to the disease. countable,historical,uncountable
    — Variolation is no longer used today. It was replaced by smallpox vaccination, a safer alternative, which in turn led to the development of vaccines against many other diseases.

词形变化

variolations plural

词源

Etymology tree
English variola
Proto-Indo-European *-tis
Proto-Indo-European *-Hō
Proto-Indo-European *-tiHō
Proto-Italic *-tiō
Latin -tiō
Latin -ātiōlbor.
Old French -ationbor.
Middle English -acioun
English -ation
English variolation
From variola + -ation.
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