Type: Term Pronunciation: frēd′len-dĕr Definitions: 1. a form of pneumonia caused by infection with Klebsiella pneumoniae (Friedl䀀nder bacillus), characteristically severe and lobar in distribution. Synonyms: Friedl䀀nder bacillus pneumonia Found on http://www.medilexicon.com/medicaldictionary.php?t=70357