1. The aggregate of two or more numbers, magnitudes, quantities, or particulars; the amount or whole of any number of individuals or particulars added together; as, the sum of 5 and 7 is 12. Take ye the sum of all the congregation. (Num. I. 2)
5. (Science: mathematics) A problem to be solved, or an example to be wrought out. A sum in arithmetic wherein a flaw discovered at a particular point is ipso facto fatal to the whole. (Gladstone) A large sheet of paper . . . Covered with long sums. (Dickens) Algebraic sum, as distinguished from arithmetical sum, the aggregate of two or more numbers or quantities taken with regard to their signs, as _ or -, according to the rules of addition in algebra; thus, the algebraic sum of -2, 8, and -1 is 5. In sum, in short; in brief. In sum, the gospel . . . Prescribes every virtue to our con be4 duct, and forbids every sin.
1. To bring together into one whole; to collect into one amount; to cast up, as a column of figures; to ascertain the totality of; usually with up. The mind doth value every moment, and then the hour doth rather sum up the moments, than divide the day. (bacon)
2. To bring or collect into a small compass; to comprise in a few words; to condense; usually with up. 'Go to the ant, thou sluggard, in few words sums up the moral of this fable. (L'Estrange) He sums their virtues in himself alone. (Dryden)
3. (Science: veterinary) To have (the feathers) full grown; to furnish with complete, or full-grown, plumage. But feathered soon and fledge They summed their pens [wings] (milton) Summing up, a compendium or abridgment; a recapitulation; a resume; a summary.