|Origin:||summe, from Latin summa, from summus 'highest'|
sum1 S3 W2 [countable]
an amount of money:
He owes me a large sum of money.
the sum of £4000
large/substantial/considerable etc sum
Bill wants to spend a large sum on modernizing the farm.
for a large/small etc sum➔ lump sum
We should be happy to buy it for a modest sum.
➔ princely sumat princely (1)
the total produced when you add two or more numbers or amounts together:
You will have to pay the sum of the two sets of costs.
having a quality or effectiveness as a group that you would not expect from the quality of each member:
The team is greater than the sum of its parts.
a simple calculation by adding, multiplying, dividing etc, especially one done by children at school
5 informal British English
to calculate whether you have enough money to do something:
Do your sums first before you decide how much to spend.
used before a statement that gives the main information about something in a few simple words:
In sum, soul music is important to the record industry.