Webster's Revised Unabridged Dictionary · 1913

Transfusion

Transfusion , noun

[Latin transfusio: compare French transfusion.]

1.
The act of transfusing, or pouring, as liquor, out of one vessel into another. — Howell
2.
(Medicine) The act or operation of transferring the blood of one man or animal into the vascular system of another; also, the introduction of any fluid into the blood vessels, or into a cavity of the body from which it can readily be adsorbed into the vessels; intrafusion; as, the peritoneal transfusion of milk.