Plus Sign
 加號
 Plus a.
 1. Math. More, required to be added; positive, as distinguished from negative; -- opposed to minus.
 2. Hence, in a literary sense, additional; real; actual.
    Success goes invariably with a certain plus or positive power.   --Emerson.
 Plus sign Math., the sign (+) which denotes addition, or a positive quantity.
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 plus sign
      n : a sign indicating the operation of addition