COLOUR VISION DEFICIENCYcolour vision deficiency · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:COLOUR VISION DEFICIENCYTier 1Ordinal255Pythagorean120Classical241Reverse339Reverse Reduction123Standard854Final Large1504Ordinal233Reduced71Atbash767Isopsephy2056Ordinal283Abjad690