Definition of “source” - English Dictionary

“source” in British English

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sourcenoun [ C ]

uk /sɔːs/ us /sɔːrs/

B2 the place something comes from or starts at, or the cause of something:

a source of heat/energy/light
a heat/energy/light source
Oranges are a good source of vitamin C.
Experts are trying to track down the source of the contamination in the water supply.
We walked up the river to its source in the hills.
Money is often a source of tension and disagreements in young married couples.

C1 someone or something that supplies information:

The journalist refused to reveal her sources (= say who had given the information to her).
According to government sources (= people in the government) many MPs are worried about this issue.
According to congressional sources (= people who work in Congress) many Representatives are worried about this issue.
Always acknowledge your sources (= say which books you have used) at the end of a paper.
at source

at the place where something comes from:

Tax is deducted from my income at source.

More examples

sourceverb [ T often passive ]

uk /sɔːs/ us /sɔːrs/

(Definition of “source” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“source” in American English

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sourcenoun [ C ]

us /sɔrs, soʊrs/

something or someone that causes or produces something, or is the origin of it:

a source of energy/light
Spinach is a good source of vitamins.
His wife was a constant source of inspiration to him.

A source is also someone or something from which you obtain information:

The reporter refused to cite the names of her sources.

sourceverb [ T ]

/sɔrs, soʊrs/

to get something from a particular place:

Where possible the produce used in our restaurant is sourced locally.

(Definition of “source” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“source” in Business English

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sourcenoun [ C ]

uk /sɔːs/ us

the place or thing that something comes from or starts at, or the cause of something:

source of sth Customer complaints are a very important source of information.
source of income/revenue For many poor families, pensions are now the main source of income.
The project still may work if money can be found from other sources to supplement tolls.
The source of the problem is unrealistic expectations about what training can accomplish.

[ often plural ] someone or something that supplies information:

Industry sources said discussions were taking place.
A source close to the firm said a total of eight employees would be let go.
at source

TAX if your income is taxed at source, income tax is taken from your salary and sent directly to the tax authorities:

Tax is deducted from my income at source.

sourceverb [ T, often passive ]

uk /sɔːs/ us PRODUCTION

to get something, especially products or materials, from a particular place:

source sth from sth The supermarket decided it wanted to source all its milk from one company.
More and more of its merchandise will have to be sourced overseas.
Financial information can now be sourced from an endless stream of online services.

(Definition of “source” from the Cambridge Business English Dictionary © Cambridge University Press)