of, relating to, or of the nature of a sacrament, especially the sacrament of the Eucharist.
powerfully binding: a sacramental obligation.
noun
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.
Origin of sacramental
First recorded in 1350–1400;Middle English word from Late Latin word sacrāmentālis. See sacrament, -al1
Related formssac·ra·men·tal·ly, adverbsac·ra·men·tal·ness, sac·ra·men·tal·i·ty, nounnon·sac·ra·men·tal, adjectiveun·sac·ra·men·tal, adjectiveun·sac·ra·men·tal·ly, adverb
late 14c., from Old French sacramental or directly from Late Latin sacramentalis, from sacramentum (see sacrament). As a noun, "religious practice or object," mid-15c.