infection

noun4

1. •
   a disease that starts when very small harmful living things get into the body and grow there

   • And researchers at the National Institutes of Health report finding candidalike fungus infections in the blood of AIDS victims. — 1988
2. •
   An uncontrolled growth of harmful microorganisms in a host.
3. •
   The act or process of infecting.
4. •
   A visible sign of such a disease, such as the suppuration of a wound.