UNDESIGNED
\ˌʌndɪzˈa͡ɪnd], \ˌʌndɪzˈaɪnd], \ˌʌ_n_d_ɪ_z_ˈaɪ_n_d]\
Word of the day
abo group
- a classification system for the antigens of human blood; used in blood transfusion therapy; four groups are and B AB O