Definition

1. Noun:
   • A specific blood group: "type AB" refers to the blood group classification in which red blood cells possess both the A antigen and the B antigen on their surface. This is one of the four main blood types in the ABO blood group system.

Usage Examples

• Noun:
  • Her blood type is AB, which is relatively rare.
  • Type AB blood can receive red blood cells from donors of any ABO type (A, B, AB, or O).

Advanced Usage

• "AB positive (AB+)" and "AB negative (AB-)": These terms specify the presence or absence of the Rh factor (Rhesus factor) in addition to the ABO type.
  • He is a universal plasma donor because he has type AB negative blood.

Variants and Related Words

• Blood type / Blood group (n): The general classification of blood based on the presence or absence of inherited antigenic substances.
  • Do you know your blood type?
• Antigen (n): A substance that can trigger an immune response, such as the A and B antigens on red blood cells.
• Universal recipient: A term sometimes used for individuals with type AB positive blood, as they can receive red blood cells from any ABO and Rh type donor.

Synonyms

• Blood group AB: A formal synonym.
• Group AB: A common shorthand in medical contexts.

Related Phrases

• "Type AB individual": A person with type AB blood.
  • Type AB individuals can donate plasma to people of any blood type.

Noun

1. the blood group whose red cells carry both the A and B antigens