Definition of mastery

• n. - The position or authority of a master; dominion; command; supremacy; superiority.
• n. - Superiority in war or competition; victory; triumph; preeminence.
• n. - Contest for superiority.
• n. - A masterly operation; a feat.
• n. - Specifically, the philosopher's stone.
• n. - The act process of mastering; the state of having mastered.