JOHN LANGDON DOWNJohn Langdon Down · English · Reference checkedReferenceOpen English WordNet 2024oewn2024:lemma:JOHN LANGDON DOWNTier 1Ordinal170Pythagorean71Reverse235Reverse Reduction64Standard280Final Large2230Ordinal118Reduced64Atbash906Isopsephy1270Ordinal172Abjad274