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—sumless, adj. —sumlessness, n./sum/, n., v., summed, summing.n.1. the aggregate of two or more numbers, magnitudes, quantities, or particulars as determined by or as if by the mathematical process of addition: The sum of 6 and 8 is 14.2. a particular aggregate or total, esp. with reference to money: The expenses came to an enormous sum.3. an indefinite amount or quantity, esp. of money: to lend small sums.4. a series of numbers or quantities to be added up.5. an arithmetical problem to be solved, or such a problem worked out and having the various steps shown.6. the full amount, or the whole.7. the substance or gist of a matter, comprehensively or broadly viewed or expressed: the sum of his opinions.8. concise or brief form: in sum.9. Math.a. the limit of the sequence of partial sums of a given infinite series.b. union (def. 10a).10. a summary.v.t.11. to combine into an aggregate or total (often fol. by up).12. to ascertain the sum of, as by addition.13. to bring into or contain in a small compass (often fol. by up).v.i.14. to amount (usually fol. by to or into): Their expenses summed into the thousands.15. sum up,a. to reckon: We summed up our assets and liabilities.b. to bring into or contain in a brief and comprehensive statement; summarize: to sum up the case for the prosecution.c. to form a quick estimate of: I summed him up in a minute.[1250-1300; (n.) ME summe < L summa sum, n. use of fem. of summus highest, superl. of superus (see SUPERIOR); (v.) ME summen ( < OF summer) < ML summare, deriv. of summa]
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Universalium. 2010.
