infectious - Dictionary definition and pronunciation - Yahoo! Education

Definition of infectious

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in·fec·tious  audio  (n-fkshs) KEY 

ADJECTIVE:
  1. Capable of causing infection.
  2. Caused by or capable of being transmitted by infection.
  3. Caused by a pathogenic microorganism or agent.
  4. Easily or readily communicated: an infectious laugh.


OTHER FORMS:
in·fectious·ly(Adverb), in·fectious·ness(Noun)


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