How do you spell Expiate

Available Definitions:
1)  v. t. - 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.
2)  v. t. - To purify with sacred rites.
3)  a. - Terminated.