1Displacement of blood from the periphery of the body towards the heart and vital organs, especially by elevation or compression of the limbs; an instance of this.
2Transfusion of a person's own blood or blood products (either saved after a haemorrhage or removed and stored for later use, e.g. following surgery); an instance of this.
Late 19th century; earliest use found in Boston Medical and Surgical Journal. From auto- + transfusion.