summation

noun

1. a concluding summary (as in presenting a case before a law court)
2. (physiology) the process whereby multiple stimuli can produce a response (in a muscle or nerve or other part) that one stimulus alone does not produce
3. the final aggregate"the sum of all our troubles did not equal the misery they suffered"
4. the arithmetic operation of summing; calculating the sum of two or more numbers"the summation of four and three gives seven"