/ |boolean| ɪkˈspreʃn̩ /
An expression that yields a Boolean value (true or false). Such expressions can involve comparisons (testing values for equality or, for non-Boolean values, the [greater than] relation) and logical combination (using Boolean operators such as and, or, and Xor) of Boolean expressions. Also called: conditional expression, logical expression. See also Boolean, Boolean algebra, Boolean operator, relational operator.