Definition of Marranism in US English:

Marranism

noun

historical
  • In medieval and early modern Spain: ostensible conversion from Judaism to Christianity, especially in order to avoid persecution; (depreciative) secret or closet Judaism.

Origin

Mid 18th century; earliest use found in John Ozell (d. 1743), translator. From Marran- + -ism.

Pronunciation

Marranism

/ˈmarənɪz(ə)m/