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Definition

knowledge noun

/ˈnɒl.ɪdʒ/US pronunciation symbol/ˈnɑː.lɪdʒ/ n
[S or U] understanding of or information about a subject which a person gets by experience or study, and which is either in a person's mind or known by people generally
Her knowledge of English grammar is very extensive.
He has a limited knowledge of French.
The details of the scandal are now common knowledge (= familiar to most people).
She started to photograph the documents, safe in the knowledge that (= knowing that) she wouldn't be disturbed for at least an hour.
In this town there are only a couple of restaurants that to my knowledge (= judging from my personal experience and information) serve good food.
[U] the state of knowing about or being familiar with something
The Government deny all knowledge of the affair.
It has come/been brought to our knowledge (= We have discovered) that several computers have gone missing.

(Definition of knowledge noun from the Cambridge Advanced Learner's Dictionary)

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