Master; sir: a title used in the Middle Ages, given to a person in authority, or to one having a licence from a university to teach philosophy and the liberal arts. / The possessor of a master's degree.

plural of magister

An academic degree in law awarded by some universities.

In a magisterial manner; authoritatively.

Magisterialness; authoritativeness.

The quality or state of being magisterial; authoritativeness.

Befitting the status or skill of a magister or master; authoritative, masterly. / Of or pertaining to a master, magistrate, the magisterium, or one in authority.

(countable, alchemy, also figuratively); (countable, chemistry); (countable) An art or a skill.

The teaching authority or office of the Roman Catholic Church. / An authoritative statement.

plural of magisterium