plusplus1 /plʌs/ prepositionprep1used when one amount or number is added to anotherWeekend calls cost a $1 base fee, plus $1 a minute.
His salary is £30,000 a year, plus bonuses.
2used when giving the second reason for somethingCost-cutting, plus strong sales, enabled the company to break even.
3plus or minus used to say that a number may be more or less by a certain amountThe poll’s margin of error is plus or minus 4 percentage points.