— expiator , n.
/ek"spee ayt'/ , v.t., expiated, expiating .
to atone for; make amends or reparation for: to expiate one's crimes.
[ 1585-95; expiatus (ptp. of expiare to atone for, make good), equiv. to ex- EX- 1 + pia ( re ) to propitiate (see PIOUS) + -tus ptp. suffix ]