Look up assertion or assert in Wiktionary, the free dictionary.

Assertion or assert may refer to:

Computing

• Assertion (software development), a computer programming technique
• assert.h, a header file in the standard library of the C programming language
• Assertion definition language, a specification language providing a formal grammar to specify behaviour and interfaces for computer software

Logic and language

• Logical assertion, a statement that asserts that a certain premise is true
• Proof by assertion, an informal fallacy in which a proposition is repeatedly restated
• Time of assertion, in linguistics a secondary temporal reference in establishing tense
• Assertive, a speech act that commits a speaker to the truth of the expressed proposition

Other uses

• Assert (horse) (1979–1995), an Irish racehorse
• Assertions (auditing), the set of information that the statement preparer is providing in a financial statement audit