noun.
The state of being a master; power of command or control; rule; dominion; sway.
noun.
Ascendancy in war or in competition; the upper hand; superiority; preëminence.
noun.
Expert knowledge or skill; power of using or exercising; dexterity: as, the mastery of an art or science.
noun.
Masterly attainment; the gaining of mastership.
noun.
A contest for superiority.
noun.
A masterly operation or act; a triumph of skill.
noun.
The finding of the magisterium or philosopher's stone; also, the stone itself.