noun. birth defect characterized by the presence of more than the normal number of fingers or toes.
- congenital disorder
- congenital anomaly
- birth defect
- congenital abnormality
- πολυδάκτυλος (Ancient Greek (to 1453))
Example sentences of the word polydactyly
1. Noun, singular or mass
If the extra toes are on the thumb side or inside of the paw, this is technically called the pre-axial form of polydactyly.
The polydactyly trait -- having extra fingers or toes -- is one example of a rare inherited dominant gene trait.