Definition: Pneumonia

From New World Encyclopedia


From Ancient Greek πνευμονία or pneumonía (lung disease), from πνεύμων or pneúmōn (lung) + -ία or -ía).


pneumonia (usually uncountable, plural pneumonias or pneumoniæ or pneumoniae)

  1. An acute or chronic inflammation of the lungs caused by viruses, bacteria or other microorganisms, or sometimes by physical or chemical irritants.

Derived terms

  • atypical pneumonia
  • bronchopneumonia
  • double pneumonia
  • lobar pneumonia
  • peripneumonia
  • pleuropneumonia
  • pneumococcal pneumonia
  • pneumocystis pneumonia
  • pneumoniac
  • single pneumonia
  • typhopneumonia


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