noun
In sports, the combination of wins by the leading team and losses by the trailing team that clinches a championship or playoff spot.
今日の試合で勝てば、マジックナンバーが1つ減る。
If we win today's game, the magic number will decrease by one.
noun
In computing, a constant numerical or string value used to identify a file format or protocol; also used for unexplained numerical constants in code.
このファイルの先頭には、マジックナンバーとして「0x89PNG」が入っている。
At the beginning of this file, '0x89PNG' is placed as the magic number.