Definition of universal donor
: a person with blood group O blood which can be donated to any recipient; also : the blood of such a person
First Known Use of universal donor
Medical Definition of universal donor
1: a person who has Rh-negative blood of the blood group O and whose blood can be donated to any recipient; broadly : a person with blood group O blood
2: the blood or blood group of a universal donor
Seen and Heard
What made you want to look up universal donor? Please tell us where you read or heard it (including the quote, if possible).