: a bacterium of the genus Corynebacterium (C. diphtheriae) that causes human diphtheria

Loeffler's syndrome

2 of 2

noun

: a mild pneumonitis that is marked by eosinophilia and transitory pulmonary infiltrates and usually occurs as an allergic reaction to drugs or parasitic infection

called also Loeffler's pneumonia

Browse Nearby Words

Cite this Entry

“Klebs-Löffler bacillus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Klebs-L%C3%B6ffler%20bacillus. Accessed 10 Jul. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!