ABO blood group

noun

ˌā-(ˌ)bē-ˈō- 

: any of the four blood groups A, B, AB, and O comprising the ABO system

Word History

First Known Use

1949, in the meaning defined above

Medical Definition

ABO blood group

noun

ˌā-(ˌ)bē-ˈō- 

: one of the four blood groups A, B, AB, or O comprising the ABO system