Definition of pygomelian in English:

pygomelian

noun

Medicine
rare
  • An animal (or person) exhibiting an abnormality of development in which one or two supernumerary limbs (more or less developed) are attached near or between the normal posterior limbs.

Origin

Late 19th century; earliest use found in William Bateson (1861–1926), biologist. From French pygomèle + -ian.

Pronunciation

pygomelian

/ˌpʌɪɡə(ʊ)ˈmiːlɪən/