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variolation [variolations]▼noun[UK: vˌeərɪəlˈeɪʃən] [US: vˌerɪəlˈeɪʃən]
variolisation▼noun
variolization [variolizations]▼noun[UK: vˌeərɪˌɒlaɪzˈeɪʃən] [US: vˌerɪˌɑːlᵻzˈeɪʃən]
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