| 1. | of, pertaining to, or of the nature of a sacrament, esp. the sacrament of the Eucharist. |
| 2. | powerfully binding: a sacramental obligation. |
| 3. | Roman Catholic Church. an action, as the sign of the cross, a ceremony resembling a sacrament, or a sacred object, regarded as being instituted by the church rather than by Christ and serving as a means of receiving sanctifying grace. |