inoculation

noun6

1. •
   The introduction of an antigenic substance or vaccine into the body to produce immunity to a specific disease.
2. •
   The introduction of a microorganism into a culture medium.
3. •
   Any technique to reduce harm by exposing oneself to a milder form of that harm.

   • Practitioners might similarly employ stress inoculation strategies wherein clients visualize binegative situations—such as being subtly invalidated […] — 2019
4. •
   Synonym of prebunking.
5. •
   An inoculum; that which is inoculated.
6. •
   The insertion of the buds of one plant into another; grafting.