Function: noun
Date: 1922
: a person with blood group O blood which can be donated to any recipient also : the blood of such a person
Function: noun
Date: 1922
: a person with blood group O blood which can be donated to any recipient also : the blood of such a person
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012