Inoculation /(?)/

In·oc·u·la·tion

Inoculation

n.
  1. The act or art of inoculating trees or plants.
  2. The act or practice of communicating a disease to a person in health, by inserting contagious matter in his skin or flesh, usually for the purpose of inducing immunity to the disease. (Med.)
  3. Fig.: The communication of principles, especially false principles, to the mind.
  4. The introduction of microorganisms into a growth medium, to cause the growth and multiplication of the microorganisms. (Microbiology)