n :  a mild pneumonitis marked by transitory pulmonary infiltration and eosinophilia and usu. considered to be basically an allergic reaction - called also Loeffler's pneumonia 
 
Löf•fler, Wilhelm (b 1887), Swiss physician. Löffler first described Loeffler's syndrome in 1932.
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.