- the limit of the sequence of partial sums of a given infinite series.
- union(def 10a).
verb (used with object), summed, sum·ming.
verb (used without object), summed, sum·ming.
- to reckon: We summed up our assets and liabilities.
- to bring into or contain in a brief and comprehensive statement; summarize: to sum up the case for the prosecution.
- to form a quick estimate of: I summed him up in a minute.
Origin of sum
Definition for sum (2 of 4)
Definition for sum (3 of 4)
Definition for sum (4 of 4)
cogito, ergo sum
Examples from the Web for sum
On the other hand, they are viewing their donors, and their future children, not as whole people but as the sum of certain parts.Have Sperm, Will Travel: The ‘Natural Inseminators’ Helping Women Avoid the Sperm Bank|Elizabeth Picciuto|November 29, 2014|DAILY BEAST
But when it comes to the value of antiquities for human history, the sum of the parts is not greater than the whole.Dismembering History: The Shady Online Trade in Ancient Texts|Candida Moss|November 23, 2014|DAILY BEAST
In sum, SARS spread to many more countries than Ebola has so far.
Two years later, in 1959, the Germans proposed a settlement of less than half the sum Paul had claimed.My Grandfather's War: Recovering the Art the Nazis Stole|Anne Sinclair|October 5, 2014|DAILY BEAST
As the economy soured, Californians began to think in terms of limited resources and came to see migration as a zero sum game.Careful What You Wish For: Here’s What California Would Look Like Without Illegal Immigrants|Ruben Navarrette Jr.|September 18, 2014|DAILY BEAST
This sum of money and the knowledge of the printer's trade made up his capital.Captains of Industry|James Parton
The word thinking, defined early in this chapter, is broadly used to denote the sum of all the intellectual faculties.Applied Psychology for Nurses|Mary F. Porter
This, he believed, was the sum of good government; and this was the government which he was determined to establish.Jefferson and his Colleagues|Allen Johnson
He had originally possessed but twenty thousand francs, a sum which in no wise corresponded with his lofty pretensions.The Count's Millions|Emile Gaboriau
How to dispose of this sum for the best advantage of his family, was matter of anxious consideration to Butler.The Heart of Mid-Lothian, Volume 2, Illustrated|Sir Walter Scott
British Dictionary definitions for sum (1 of 3)
- the result of the addition of numbers, quantities, objects, etc
- the cardinality of the union of disjoint sets whose cardinalities are the given numbers
verb sums, summing or summed
Word Origin for sum
British Dictionary definitions for sum (2 of 3)
noun plural sumy (sʊmɪ)
British Dictionary definitions for sum (3 of 3)
cogito, ergo sum
Word Origin and History for sum
late 13c., "quantity or amount of money," from Anglo-French and Old French summe (13c.), from Latin summa "total number, whole, essence, gist," noun use of fem. of summus "highest," from PIE *sup-mos-, from root *uper "over" (see super-).
The sense development from "highest" to "total number" is probably via the Roman custom of adding up a stack of figures from the bottom and writing the sum at the top, rather than at the bottom as we do now (cf. the bottom line). Meaning "total number of anything" is recorded from late 14c. Meaning "essence of a writing or speech" also is attested from late 14c. The verb is attested from c.1300; meaning "briefly state the substance of" (now usually with up) is first recorded 1620s. Sum-total is attested from late 14c., from Medieval Latin summa totalis.