Definition of monodactyly in English:

monodactyly

noun

Medicine Zoology
  • [mass noun] A condition in which there is only one finger or toe on each hand or foot.

Origin

Late 19th century: from monodactyl (from Greek monodaktulos one-fingered) + -y.

Pronunciation:

monodactyly

/ˌmɒnə(ʊ)ˈdaktɪli/