Source : Webster's Revised Unabridged Dictionary (1913)

Fibrinoplastin \Fi`bri*no*plas"tin\, n. [Fibrin + Gr. ? to form,
   mold.] (Physiol.Chem.)
   An albuminous substance, existing in the blood, which in
   combination with fibrinogen forms fibrin; -- called also
   {paraglobulin}.