Definition of prehallux in English:

prehallux

noun

Zoology
  • A rudimentary digit found on the inner side of the tarsus of some mammals, reptiles, and amphibians, sometimes as a congenital abnormality.

Origin

Late 19th century; earliest use found in Proceedings of the Zoological Society of London. From German Praehallux from classical Latin prae- + hallux.

Pronunciation

prehallux

/priːˈhaləks/