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

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

Thanks to this study, we now understand the mechanisms behind the Helgeson blood group and why it can be more difficult to detect in certain populations.

From Science Daily • Sep. 29, 2023

Approximately 1% of the population has this blood group but it hasn't even been possible to detect it with the help of DNA techniques.

From Science Daily • Sep. 29, 2023

By using DNA sequencing and gene-editing techniques, the researchers showed that Piezo1 is the carrier for these sites and established Er as a new blood group system.

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