In`ter*fuse" (), v. t. [L. interfusus, p. p. of interfundere to pour between; inter between + fundere to pour. See Fuse to melt.]
To pour or spread between or among; to diffuse; to scatter.
The ambient air, wide interfused,
Embracing round this florid earth.
To spread through; to permeate; to pervade.
Keats, in whom the moral seems to have so perfectly interfused the physical man, that you might almost say he could feel sorrow with his hands.
To mix up together; to associate.
© Webster 1913.