Adding and Plus

noun

• A useful or valuable quality.
  • synonyms: asset
• The arithmetic operation of summing; calculating the sum of two or more numbers.
  • usage: "the summation of four and three gives seven"; "four plus three equals seven"
  • synonyms: summation, addition

adjective

• On the positive side or higher end of a scale.
  • usage: "a plus value"; "temperature of plus 5 degrees"; "a grade of C plus"
• Involving advantage or good.
  • usage: "a plus (or positive) factor"
  • synonyms: positive

• (a.) More, required to be added; positive, as distinguished from negative; -- opposed to minus.
• (a.) Hence, in a literary sense, additional; real; actual.

Plus is used to quote a price in 64ths. Dealers in government bonds normally give price quotes in 32nds. To quote a bid or offer in 64ths, they use pluses; a dealer who bids 4+ is bidding the handle plus 4/32 + 1/64, which equals the handle plus 9/64.