(logic) Describing situations in which the veracity of a statement may be shown to be true without revealing any other information.

(cryptography) An interactive method for one party to prove to another that a (usually mathematical) statement is true, without revealing anything other than the veracity of the statement.

(rare) Alternative form of knowledgeable

Knowledge or insight into one's own nature and abilities.

A database designed to meet the complex storage and retrieval requirements of computerized knowledge management, especially in support of artificial intelligence or expert systems.

(transitive) To announce (some information) generally. / (transitive) To disclose (a secret).

Alternative spelling of know-how

That which is known by most people, and thus cannot reasonably be contested.

As far as I know.

Alternative spelling of knowledge base