Medical Dictionary


noun pneu·mo·nia \n(y)-ˈmō-nyə\

Medical Definition of PNEUMONIA

:  a disease of the lungs that is characterized especially by inflammation and consolidation of lung tissue followed by resolution, is accompanied by fever, chills, cough, and difficulty in breathing, and is caused chiefly by infection—see bronchopneumonia, lobar pneumonia, primary atypical pneumonia
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