单词 | prevaccination |
释义 | prevaccination/ˌpriːvaksɪˈneɪʃn/adjective 1Occurring before the time when vaccination against smallpox became available. 2 Medicine and Biology. Occurring, administered, or obtained before an instance or period of vaccination. OriginLate 19th century; earliest use found in The Times. From pre- + vaccination. |
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