kifejezés

Kifejezés is a Hungarian noun meaning expression, referring to the act of expressing something or to what is expressed. The term is used across several domains, including linguistics, mathematics, and computer science, with related but distinct senses in each field.

In linguistics, kifejezés can denote a lexical or phrasal unit that conveys meaning. This includes single words, fixed phrases (idioms), and collocations. A kifejezés often carries a sense that cannot be inferred from its individual words, and it is distinguished from a sentence (mondat) or a single word (szó). Idioms and other phraseological units are typical examples of linguistic kifejezések.

In mathematics and logic, a kifejezés is a finite arrangement of symbols that can be evaluated to produce a value or truth value. Such expressions commonly involve numbers, variables, and operators, for instance 3x + 2 or (a + b) / c. The meaning and value of a mathematical kifejezés depend on the interpretation of its variables and operators.

In computing and programming, an expression is a construct that yields a value when evaluated by a computer or interpreter. It can be an arithmetic, boolean, or more complex expression, often forming part of larger statements or program logic.

Etymology: kifejezés derives from the verb kifejezni, meaning to express, with the noun form created by the suffixes -zés or -és. The term thus marks both the act of expressing and the product or result that is expressed. The exact sense of kifejezés depends on domain and context.