PROTANOPIAprotanopia · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:PROTANOPIATier 1Ordinal125Pythagorean53Classical118Reverse145Reverse Reduction55Standard832Final Large832Ordinal112Reduced40Atbash225Isopsephy762Ordinal132Abjad678