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Adjective: infective  in'fek-tiv
  1. Able to cause disease
    "infective agents";
    - morbific, pathogenic, pathogenetic
     
  2. Caused by infection or capable of causing infection
    "a carrier remains infective without himself showing signs of the disease"; "viruses and other infective agents";
    - infectious

See also: infected, septic, unhealthful

Encyclopedia: Infective