Blood groupings refer to the various types of blood groups that exist within a population. Synonyms for this term can include blood typing, blood grouping, or blood classification. Additionally, there are different systems that can be used to group blood, such as the ABO system or the Rh system. Other synonyms for blood groupings may refer specifically to these systems, such as ABO grouping or Rh typing. It is important to accurately identify an individual's blood groupings in order to determine compatibility for blood transfusions or organ transplants, so having a clear understanding of the various synonyms for this term can be helpful in medical contexts.