(~s, sourcing, ~d)
Frequency: The word is one of the 1500 most common words in English.
1.
The ~ of something is the person, place, or thing which you get it from.
Renewable ~s of energy must be used where practical...
Tourism, which is a major ~ of income for the city, may be seriously affected.
N-COUNT: usu N of n
2.
In business, if a person or firm ~s a product or a raw material, they find someone who will supply it. (BUSINESS)
Together they travel the world, sourcing clothes for the small, privately owned company...
About 60 per cent of an average car is ~d from outside of the manufacturer.
VERB: V n, V n
3.
A ~ is a person or book that provides information for a news story or for a piece of research.
Military ~s say the boat was heading south at high speed...
N-COUNT: usu with supp
4.
The ~ of a difficulty is its cause.
This gave me a clue as to the ~ of the problem.
= cause
N-COUNT: N of n
5.
The ~ of a river or stream is the place where it begins.
...the ~ of the Tiber.
N-COUNT: usu sing