"summations" in the noun sense
1. summation, summing up, rundown
a concluding summary (as in presenting a case before a law court)
2. summation
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. sum, summation, sum total
the final aggregate
"the sum of all our troubles did not equal the misery they suffered"
4. summation, addition, plus
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"
Source: WordNet® (An amazing lexical database of English)
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