: the basic system of antigens of human blood behaving in heredity as an allelic unit to produce any of the ABO blood groups

Examples of ABO system in a Sentence

Recent Examples on the Web
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Most people are aware of the ABO system and the rhesus system for classifying blood. Sam Walters, Discover Magazine, 17 Nov. 2022

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of ABO system was in 1938

Dictionary Entries Near ABO system

Cite this Entry

“ABO system.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ABO%20system. Accessed 17 Dec. 2024.

Medical Definition

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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