Main Entry: mas·tery

Pronunciation: \ˈmas-t(ə-)rē\

Function: noun

Etymology: Middle English maistrie, from Anglo-French mestrie, maistrie, from meistre master

Date: 13th century

1 a : the authority of a master : dominion b : the upper hand in a contest or competition : superiority, ascendancy
2 a : possession or display of great skill or technique b : skill or knowledge that makes one master of a subject : command