Infection

n.
  1. The act or process of infecting.
  2. That which infects, or causes the communicated disease; any effluvium, miasm, or pestilential matter by which an infectious disease is caused.
  3. The state of being infected; the condition of suffering from an infectious disease; contamination by morbific particles; the result of infecting influence; a prevailing disease; epidemic.
  4. That which taints or corrupts morally; as, the infection of vicious principles.
  5. (Law) Contamination by illegality, as in cases of contraband goods; implication.
  6. Sympathetic communication of like qualities or emotions; influence.
  7. A localized area of tissue which is inflamed by growth of microorganisms; as, he has an infection in his finger.