Synonyms

blood group

American

noun

Medicine/Medical.

any of various classes into which human blood can be divided according to immunological compatibility, based on the presence or absence of specific antigens on red blood cells.

blood group British

noun

Also called: blood type. any one of the various groups into which human blood is classified on the basis of its agglutinogens

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

blood group Scientific

See blood type

blood group Cultural

See blood type.

Etymology

Origin of blood group

First recorded in 1915–20

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

According to JPAC, autologous donation is only recommended for patients with rare blood groups or who have multiple blood group antibodies.

From BBC • Apr. 12, 2026

Red blood cells from blood group O are the only type that can be used by all receiving patients regardless of ABO type.

From Science Daily • Apr. 29, 2024

Any possible donor must be aged between 18 and 50, and in blood group O. They can either be positive or negative.

From BBC • Feb. 23, 2024

This is how the blood group became known as Helgeson.

From Science Daily • Sep. 29, 2023

When a person needs a transfusion, a mismatch of blood types can cause alloimmunization, or the generation of antibodies against the foreign blood group.

From Seattle Times • Oct. 11, 2022

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023