Definition of plus-minus in English:

plus-minus

noun

Hockey
  • [often as modifier] A running total used as an indication of a player's effectiveness, calculated by adding one for each goal scored by the player's team in even-strength play while the player is on the ice, and subtracting one for each goal conceded.

    • ‘He had three goals, one assist, 23 shots, 10 hits and a plus-minus mark of even.’
    • ‘The best example of this team's improvement is found in the plus-minus ratings, where only two players are on the negative side of the ledger.’
    • ‘Traditional plus-minus systems tend to overrate average players on good teams and underrate good players on lousy ones.’
    • ‘He's only a fourth-line checker for now, but he has made the most of his opportunity - 17 goals and a plus-minus rating of plus - 22.’
    • ‘The 20-year-old defender isn't putting up big offensive numbers, but he's been right around the break-even point in plus-minus ratings all season, despite playing on the worst team in the West.’