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.-a quantity of money or currency; any amount, indefinitely; as, a sum of money; a small sum, or a large sum.-the principal points or thoughts when viewed together; the amount; the substance; compendium; as, this is the sum of all the evidence in the case; this is the sum and substance of his objections.-height; completion; utmost degree.-a problem to be solved, or an example to be wrought out.-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.-to bring or collect into a small compass; to comprise in a few words; to condense; -- usually with up.-to have (the feathers) full grown; to furnish with complete, or full-grown, plumage.