expiation
ex.pi.a.tion \.ek-spe--'a--sh*n\ n 1: the act of making atonement 2: the means by which atonement is made
Webster's English Dictionaryex.pi.a.tion \.ek-spe--'a--sh*n\ n 1: the act of making atonement 2: the means by which atonement is made