Polydactyly is a condition where a person or animal has more than five fingers or toes on their hands or feet. Although this condition is not very common, there are a variety of synonyms that may be used to describe it. These include hyperdactyly, supernumerary digits, and extra fingers or toes. Hyperdactyly and supernumerary digits both refer to the presence of additional fingers or toes, while extra fingers or toes is a more general term that describes any additional digits on a person or animal. Regardless of which synonym is used, it is clear that having more than five fingers or toes can be a unique and distinctive trait.