ABO system
noun
: the basic system of antigens of human blood behaving in heredity as an allelic unit to produce any of the ABO blood groups
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Most people are aware of the ABO system and the rhesus system for classifying blood.
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Sam Walters, Discover Magazine, 17 Nov. 2022
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Sam Walters, Discover Magazine, 17 Nov. 2022
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“ABO system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ABO%20system. Accessed 30 Oct. 2025.
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ABO system
noun
: the basic system of antigens of human blood behaving in heredity as an allelic unit to produce any of the ABO blood groups
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