From the Latin sacerdos, "priest." It means of or pertaining to the order of priests or the role, identity, or function of priests. A ministry reserved to the ordained priesthood is a sacerdotal ministry. Sacerdotal ministries include celebrating the eucharist and granting absolution in the Reconciliation of a Penitent.
Glossary definitions provided courtesy of Church Publishing Incorporated, New York, NY,(All Rights reserved) from "An Episcopal Dictionary of the Church, A User Friendly Reference for Episcopalians," Don S. Armentrout and Robert Boak Slocum, editors.