Definition of piebaldism in US English:

piebaldism

noun

  • The condition of being piebald; specifically (Medicine) an inherited (autosomal dominant) condition characterized by a white forelock and reduced or absent pigmentation of the middle part of the face and the ventral surfaces of the body and limbs.

Origin

Late 19th century; earliest use found in The Standard. From piebald + -ism.

Pronunciation

piebaldism

/ˈpʌɪbɔːldɪz(ə)m/