sacred rite recognized as of particular importance and significance
Sometimes Sacrament can stand for Eucharist

In Christianity, a sacrament is a special rite. It is a visible token of the reality of God.

Sacraments in the Catholic Church change

The seven sacraments of the Catholic church.

The Roman Catholic Church knows seven such sacraments. These are

Protestant views change

Following Martin Luther's tradition, many Protestant churches see only Baptism and Lord's Supper as Sacraments. They also have most of the other rites, but do not consider them to be sacraments.

Eastern Orthodox and Oriental Orthodox views change

Eastern Orthodox and Oriental Orthodox Churches basically have the same views as the Roman Catholic Church. They say however, that many things the church does (as church), can be seen as sacraments, in some way.