NOT (plural NOTs)
- (mathematics, logic) A unary operation on logical values that changes true to false, and false to true.
- The symbols ¬, !, ~, ˈ and Ā have all been used for the NOT operator in various contexts.
- Boolean variables and states (AND, OR, NOT, TRUE, FALSE etc.) are commonly written in all uppercase in order to distinguish them from the ordinary uses of the words.