Main entry: summation, plus, addition
Definition: 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
Definition: a useful or valuable quality
Definition: involving advantage or good
Usage: a plus (or positive) factor
Main entry: plus
Definition: on the positive side or higher end of a scale
Usage: a plus value; temperature of plus 5 degrees; a grade of C plus