summation

noun

1. 1

   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

2. 2

   a concluding summary (as in presenting a case before a law court)

3. 3

   the final aggregate

   the sum of all our troubles did not equal the misery they suffered

4. 4

   (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