Definition of leprolin in US English:

leprolin

noun

Medicine
  • Originally: a preparation supposedly derived from cultures of Mycobacterium leprae, used in attempts to treat and prevent leprosy (now historical). In later use: any of several preparations containing proteins of M. leprae, used in skin testing for the classification of cases of leprosy.

Origin

Early 20th century. From lepro- + -lin.

Pronunciation

leprolin

/ˈlɛprəlɪn/