Source : Webster's Revised Unabridged Dictionary (1913)

Patripassian \Pa`tri*pas"sian\, n. [LL. Patripassiani, pl.; L.
   pater father + pati, passus, to suffer: cf. F.
   patripassiens.] (Eccl. Hist.)
   One of a body of believers in the early church who denied the
   independent pre["e]xistent personality of Christ, and who,
   accordingly, held that the Father suffered in the Son; a
   monarchian. -- {Pa`tri*pas"sian*ism}, n.