/trans fyooh"zheuhn/ , n.
1. the act or process of transfusing.
2. Med. the direct transferring of blood, plasma, or the like into a blood vessel.
[ 1570-80; transfusion- (s. of transfusio ) decanting, intermingling, equiv. to transfus ( us ) (see TRANSFUSE) + -ion- -ION ]