Definition of tetradactyly in English:

tetradactyly

noun

Zoology
  • See tetradactyl

    • ‘Tetradactyly of both hands, hypoplasia of both fibulas and scapuloiliac hypoplasia is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH).’
    • ‘Some mammals also exhibit tetradactyly (for example the hind limbs of dogs and cats).’