syndactylism

/sɪnˈdæktɪlɪzəm/
noun
  1. The condition of having fingers or toes that are fused or joined together.
    • In some animals, syndactylism is normal and helps with climbing or swimming.
    • The doctor diagnosed syndactylism in the newborn and discussed treatment options.
    • Syndactylism is a common birth defect that can affect the hands or feet.
Synonyms
What does "syndactylism" mean? | whatsthatwordmean | whatsthatwordmean