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
Main entry: summation, summing up, rundown
Definition: a concluding summary (as in presenting a case before a law court)
Main entry: sum, sum total, summation
Definition: the final aggregate
Usage: the sum of all our troubles did not equal the misery they suffered
Main entry: summation
Definition: (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