·noun Contest for superiority.
II. Mastery ·noun A masterly operation; a feat.
III. Mastery ·noun Specifically, the philosopher's stone.
IV. Mastery ·noun The act process of mastering; the state of having mastered.
V. Mastery ·noun Superiority in war or competition; victory; triumph; preeminence.
VI. Mastery ·noun The position or authority of a master; dominion; command; supremacy; superiority.