There are seven sacraments in the Church: Baptism, Confirmation or Chrismation, Eucharist, Penance, Anointing of the Sick, Holy Orders, and Matrimony.
I lifted the quote above from Wikipedia, and it's accurate as far as I know.
At it's heart, a Sacrament is a
visible sign of an invisible grace, and always takes the form of a ritual of some kind - the familiar spectacle of Baptism whether by sprinkling or immersion, the marriage vows, Eucharist or Communion, Holy Orders etc.
The Protestants generally only have two - Baptism and Communion / Eucharist, stating that they do these two only because Christ told them to.
But if we take the definition of "a visible sign of an invisible grace", then Holy Orders must surely qualify, as does marriage, since Christ was at some pains to point out how much God hates divorce.
If Holy Orders (Ordination of a priest, pastor, bishop, deacon etc.) does not qualify as a sacrament, then what is effectively being said is that when a man swears under oath (whatever the wording is) to be one of God's pastors, priests, deacons or bishops, then God is not in the least involved. No grace is present whatsoever, and it is entirely a human work.
But if God is present, and surely He would have a keen interest in the ordination of the workers in His Church, then His grace is involved. And if His grace is involved,
then the ordination ritual becomes a visible sign of an invisible grace.
Otherwise it is merely a human work, of no more spiritual significance than someone else signing on the dotted line to be a garbage collector.
As far as I'm concerned, the Protestant definition of a sacrament is too narrow
.