肺はい炎えん桿かん菌きんMeanings1nounKlebsiella pneumoniaemedicine›Medical term for the bacterium that causes pneumonia and other infections.肺はい炎えん桿かん菌きんは院いん内ない感かん染せんの原げん因いん菌きんの一ひとつです。Klebsiella pneumoniae is one of the causative agents of hospital-acquired infections.