\hˈapən əpˌɒn], \hˈapən əpˌɒn], \h_ˈa_p_ə_n ə_p_ˌɒ_n]\
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2006 - WordNet 3.0
By Princeton University
2011 - English Dictionary Database
By DataStellar Co., Ltd

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abo group

  • a classification system for the antigens of human blood; used in blood transfusion therapy; four groups are and B AB O
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