Definition of sum

• n. - 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.
• n. - A quantity of money or currency; any amount, indefinitely; as, a sum of money; a small sum, or a large sum.
• n. - 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.
• n. - Height; completion; utmost degree.
• n. - A problem to be solved, or an example to be wrought out.
• v. t. - 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.
• v. t. - To bring or collect into a small compass; to comprise in a few words; to condense; -- usually with up.
• v. t. - To have (the feathers) full grown; to furnish with complete, or full-grown, plumage.