Master of Applied Science
Master of Applied Science (abbreviations include MASc, MAppSc, MApplSc, and MAS) is an academic degree. It is conferred far more widely in the Commonwealth of Nations than in the US. "MASc" degrees are generally conferred in Commonwealth of Nations for engineering-related studies more academic than those required for the Master of Engineering (MEng).
Source: Wikipedia — Master of Applied Science (CC BY-SA 4.0)