资料来源 : Webster's Revised Unabridged Dictionary (1913)

Intrafusion \In`tra*fu"sion\, n. [Pref. intra- + L. fundere,
   fusum, to pour.]
   The act of pouring into a vessel; specif. (Med.), the
   operation of introducing a substance into a blood vessel; as,
   intrafusion of blood.