plus-minus
noun
• 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.
plus-minus
adverb
• more or less; roughly.
• "it was plus-minus 8.30 a.m"
plus or minus
• used to define the margin of error of an estimate or calculation.
• "the coral was estimated to be 840 years old, plus or minus 40 years"
