From Longman Dictionary of Contemporary Englishpneumoniapneu‧mo‧ni‧a /njuːˈməʊniə $ nʊˈmoʊ-/ noun [uncountable] MIa serious illness that affects your lungs and makes it difficult for you to breathe She was taken to hospital, suffering from pneumonia.
Examples from the Corpus
pneumonia• Long-term outcome after community-acquired pneumonia, however, has not been as well investigated.• These results, therefore, may not apply to persons with community-acquired pneumonia who are managed as outpatients.• A chest infection turned into pneumonia.• He started with pleurisy which turned into pneumonia and because he wasn't a strong man it carried him off.• The card suffered a big blow when Phoenix junior-flyweight Michael Carbajal withdrew because of pneumonia.• He did not have the typical fever of pneumonia.• It was not known Wednesday what type of pneumonia Yeltsin may have contracted.Origin pneumonia (1600-1700) Modern Latin Greek, from pneumon “lung” 