inoculate

Short definition from Wiktionary

Verb

1. 1
   To introduce an antigenic substance or vaccine into something (e.g. the body) or someone, such as to produce immunity to a specific disease.
2. 2
   To safeguard or protect something as if by inoculation.
3. 3
   To add one substance to another.
4. 4
   To graft by inserting buds.
5. 5
   To introduce into the mind (used especially of harmful ideas or principles).

Noun

1. 1
   Synonym of inoculum.