-explate-

{ } v. t. [ Pref. ex- + plat or plait. ] To explain; to unfold. [ Obs. ] [ 1913 Webster ]

Like Solon's self explatest the knotty laws. B. Jonson. [ 1913 Webster ]

v. t. [ imp. & p. p. Expiated p. pr. & vb. n. Expiating ] [ L. expiatus, p. p. of expiare to expiate; ex out + piare to seek to appease, to purify with sacred rites, fr. pius pious. See Pious. ] 1. To extinguish the guilt of by sufferance of penalty or some equivalent; to make complete satisfaction for; to atone for; to make amends for; to make expiation for; as, to expiate a crime, a guilt, or sin. [ 1913 Webster ]

To expiate his treason, hath naught left. Milton. [ 1913 Webster ]

The Treasurer obliged himself to expiate the injury. Clarendon. [ 1913 Webster ]

2. To purify with sacred rites. [ Obs. ] [ 1913 Webster ]

Neither let there be found among you any one that shall expiate his son or daughter, making them to pass through the fire. Deut. xviii. 10 (Douay version) [ 1913 Webster ]