"universal donor." YourDictionary, n.d. Web. 10 November 2018. <https://www.yourdictionary.com/universal-donor>.
universal donor. (n.d.). Retrieved November 10th, 2018, from https://www.yourdictionary.com/universal-donor
A person who has group O blood and is therefore able to serve as a donor to a person with any other blood type. Group O blood contains red blood cells that do not have the antigen A or B and thus do not react with antibodies to these antigens found in the plasma of the other blood types.