English Sudoku Cited by user 2600:8801:1391:FA00:E5E5:1F31:5DFF:7B42 on 24 Dec 2021 Sudoku (数独; originally called Number Place) is a logic-based, combinatorial number-placement puzzle.
English QRS complex Cited by user 194.176.105.166 on 04 May 2018 The QRS complex is the combination of three of the graphical deflections seen on a typical electrocardiogram (ECG or EKG).