Definition of mi-parti in English:

mi-parti

Pronunciation /miːpɑːˈtiː/

adjective

(also miparti)
Heraldry
  • Party per pale.

Origin

Early 17th century; earliest use found in Edmund Bolton (?1575/5–?1634), antiquary and historian. From French mi-parti, past participle of mi-partir to divide into halves from mi- in the middle + partir to divide.