plus
adjective(plus)
involving advantage or good
Examples:
A plus (or positive) factor.
plus
noun(plus)
a useful or valuable quality
plus
noun(plus)
the arithmetic operation of summing; calculating the sum of two or more numbers
Examples:
Four plus three equals seven.
plus
adjective(plus)
on the positive side or higher end of a scale
Examples:
A plus value.
Temperature of plus 5 degrees.
A grade of C plus.