REVERSE POLISH NOTATIONreverse Polish notation · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:REVERSE POLISH NOTATIONTier 1Ordinal279Pythagorean108Classical264Reverse288Reverse Reduction117Standard1814Final Large2464Ordinal221Reduced68Atbash462Isopsephy1658Ordinal263Abjad1814