an amount of money
the result of adding numbers
The sum of five and seven is twelve
the whole amount of anything; the total
numbers to be added, subtracted, multiplied, or divided; a simple arithmetical problem
in mathematics, the limit of the sum of the first n terms of an infinite series as n increases indefinitely
in sum
briefly
[Middle English summe via Old French from Latin summa total, sum of money, fem of summus highest, chief]