Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Adjective: infectious  in'fek-shus
  1. Caused by infection or capable of causing infection
    "viruses and other infectious agents";
    - infective
  2. Easily spread
    "fear is exceedingly infectious; children catch it from their elders"
  3. Of or relating to infection
    "infectious hospital"; "infectious disease"

See also: catching, communicable, contagious, contaminating, contractable, corrupting, infected, septic, transmissible, transmittable

Antonym: noninfectious

Encyclopedia: Infectious