noun
- A classification system for the antigens of human blood; used in blood transfusion therapy; four groups are A and B and AB and O.
- synonyms: ABO blood group system, ABO group
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). abo system. Retrieved September 21, 2026, from http://smartdefine.org/abo_system/definitions/1254311 |
| Chicago | WordNet. 2010. "abo system" http://smartdefine.org/abo_system/definitions/1254311 (accessed September 21, 2026). |
| Harvard | WordNet 2010, abo system, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/abo_system/definitions/1254311>. |
| MLA | WordNet. "abo system" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/abo_system/definitions/1254311> |