Definition of macromelia in US English:

macromelia

noun

Medicine
  • Abnormal enlargement of a limb.

Origin

Late 19th century; earliest use found in T. Clifford Allbutt (1836–1925), physician. From macro- + ancient Greek μέλος limb + -ia, probably after French macromélie; compare earlier micromelia.

Pronunciation

macromelia

/ˌmakrə(ʊ)ˈmiːlɪə/