1. A secondary infection originating from a focus of infection already present in the body.
2. Spread of a disease from one part of the body to another part.
3. Inoculation with organisms already present in or on the body; self-inoculation.
4. Injection of an autovaccine.

Autoinoculation is a procedure in which cells are removed from a person's body, treated or medically changed, and then placed back into the body. This procedure is done to help prevent an immune reaction.

Autoinoculation can also refer to the movement of microorganisms from one location of the body to another.