(Christianity) A sacred act and the attendant ceremony, considered (theology) an outward sign of divine grace. / (in particular) The Eucharist. / The consecrated Eucharist (especially the bread).

(transitive) To bind by an oath.

plural of sacrament

Used in, or relating to, a sacrament.

(Christianity, chiefly Roman Catholicism) An object (such as holy water or a crucifix) or an action (such as making the sign of the cross) which is regarded as encouraging devotion and thus spiritually aiding the person who uses it.

(theology) The belief that observance of the sacraments is necessary for salvation, or belief in their efficacy.

sacramental nature, character or quality

sacramentality

In a sacramental manner.

(Christianity) To administer the sacraments.