Reverse Polish notation
WordNet

noun


(1)   A parenthesis-free notation for forming mathematical expressions in which each operator follows its operands
WiktionaryText

Noun


  1. an arithmetic notation in which numbers precede the operators to be applied to them.
    Back in my day, we had reverse Polish notation calculators: You had to write "2 4 3 * +" instead of "2 + 4 * 3".
 
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