"plus" in the noun sense
1. asset, plus
a useful or valuable quality
2. summation, addition, plus
the arithmetic operation of summing calculating the sum of two or more numbers
"the summation of four and three gives seven"
"four plus three equals seven"
"plus" in the adjective sense
on the positive side or higher end of a scale
"a plus value"
"temperature of plus 5 degrees"
"a grade of C plus"
2. plus, positive
involving advantage or good
"a plus (or positive) factor"
Source: WordNet® (An amazing lexical database of English)
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