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expĭātĭo: ōnis, f. expio,I satisfaction, atonement, expiation (rare but class.): at vero scelerum in homines atque impietatum nulla expiatio est, * Cic. Leg. 1, 14, 40: foederis rupti, Liv. 9, 1, 4; Vulg. Exod. 29, 36 al.