Definition

1. Noun:
   • A blood group classification: "type B" refers to one of the major human blood groups in the ABO blood type system. Red blood cells in this group have the B antigen on their surface, and the plasma contains anti-A antibodies.

Usage

• "Type B" is used as a countable noun, typically preceded by an article or determiner (e.g., , , ). It is a specific medical and biological term.
• It is commonly used in contexts related to medicine, biology, blood donation, and genetics.

Examples

• Noun:
  • She has type B blood, so she can only receive transfusions from type B or type O donors.
  • The distribution of type B varies in different populations around the world.
  • Is your blood group type A or type B?

Advanced Usage

• "to be type B": used to describe a person's blood group.
  • Both parents must carry the allele for the child to be type B.
• In a broader, informal context (not strictly medical), "Type B" is sometimes used in pop psychology to describe a personality characterized as relaxed, less competitive, and more reflective, contrasting with the driven "Type A" personality. However, this is a distinct and separate usage from the primary blood group definition.

Variants and Related Words

• Blood type B: A fuller, more descriptive term synonymous with "type B".
• Group B: An alternative phrasing, especially in medical contexts.
• B positive (B+) / B negative (B-): Specific types within the "type B" classification, indicating the presence or absence of the Rh factor.
• ABO system: The classification system that includes types A, B, AB, and O.

Synonyms

• Blood group B
• Blood type B

Related Phrases

• Type B donor: A person with type B blood who gives blood.
  • As a type B donor, your blood is especially needed.
• Type B recipient: A person with type B blood who receives a transfusion or transplant.
  • The type B recipient is waiting for a compatible organ.

Noun

1. the blood group whose red cells carry the B antigen