Immaculate Conception
noun
1- the doctrine that God preserved the Virgin Mary from the taint of original sin from the moment she was conceived; it was defined as a dogma of the Roman Catholic Church in 1854.圣母无罪成胎说（即认为上帝自圣母马利亚怀胎之日起就维护她说始未受原罪玷污。此说于1854年定为天主教信条）。
1.1
- the feast commemorating the Immaculate Conception on December 8th圣母纯洁成胎节（12月8日）。