inoculation

Short definition from Wiktionary

Noun

1. 1
   The introduction of an antigenic substance or vaccine into the body to produce immunity to a specific disease.
2. 2
   The introduction of a microorganism into a culture medium.
3. 3
   The insertion of the buds of one plant into another; grafting.
4. 4
   An inoculum; that which is inoculated.
5. 5
   Synonym of prebunking.