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sulphurous
sulphurous acid
sulphuryl
sultan
sultana
sultanate
sultry
sulu
sum (1)
sum (2)
sum total
sum up
sum-up
sumach
Sumerian
sumi
sumi-e
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sum (1)

sum [ sum ]


noun  (plural sums)
Definition:
 
1. money: an amount of money

2. arithmetical calculation: a mathematical problem involving adding, subtracting, multiplying, or dividing numbers, especially one given to students to solve

3. total: the total amount resulting when two or more numbers or quantities are added together

4. combined total: the combined total amount or quantity of something

5. mathematics limit of sum of series: the limit, as n increases indefinitely, of the sum of the first n terms of an infinite series

6. gist: the essential point of something that somebody has said or written ( literary )



transitive verb  (3rd person present singular sums, present participle summing, past and past participle summed)
Definition:
 
add up amounts: to add together two or more amounts to find their total ( formal )

[13th century. Via French< Latin summa 'sum, substance' < form of summus 'highest']

summability [ súmmə bílləti ] noun
summable adjective

in sum in short or as a summary


Spelling Note

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Word History

The semantic development of sum from 'highest' to 'sum total' resulted from the Roman practice of counting columns of figures from the bottom upwards, the total being written at the top.

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