OS TRAPEZIUMos trapezium · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:OS TRAPEZIUMTier 1Ordinal163Pythagorean55Classical153Reverse134Reverse Reduction62Standard809Final Large1369Ordinal116Reduced44Atbash298Isopsephy1213Ordinal151Abjad733