Someone's blood type is the same as their blood group.
blood type in British English
noun
another name for blood group
blood type in American English
US
any of the divisions in a classification of blood based on the individual agglutinogens of a given blood group that are present on a person's red blood cells: the presence of the agglutinogens is detected by the cells' reactions with specific antibodies
Examples of 'blood type' in a sentence
blood type
It had been possible to match her blood type with that of Jacqueline Gérard through Red Cross records passed on by her family.