Polish Notation

(′pō·lish nō′tā·shən)

(computer science) A notation system for digital-computer or calculator logic in which there are no parenthetical expressions and each operator is a binary or unary operator in the sense that it operates on not more than two operands. Also known as Lukasiewicz notation; parenthesis-free notation. The version of this notation in which operators precede the operands with which they are associated. Also known as prefix notation.

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Way of writing algebraic expressions that does not require parentheses to state which operations are done first; also called reverse Polish notation. It is named in honor of its inventor, Jan Lukasiewicz (1878–1956).

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