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Related to hyperdactyly: Supernumerary digit
(Medicine) med an inborn physical abnormality characterized by excessive fingers or toes
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|Noun||1.||hyperdactyly - birth defect characterized by the presence of more than the normal number of fingers or toes|
human, human being, homo, man - any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage