FIRST IN FIRST OUTfirst in first out · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:FIRST IN FIRST OUTTier 1Ordinal223Pythagorean79Classical213Reverse182Reverse Reduction101Standard1972Final Large2622Ordinal226Reduced64Atbash326Isopsephy3050Ordinal269Abjad1972