1. (Christianity) the Roman Catholic dogma that God preserved the Virgin Mary from any stain of original sin from the moment she was conceived
   - Immaculate Conception of the Virgin Mary 
2. Roman Catholic holy day first celebrated in 1854
   - December 8

Type of: church doctrine, creed, gospel, holy day of obligation, religious doctrine

Encyclopedia: Immaculate Conception Immaculate Conception, Congregation of the

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