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Glite Dictionary
group B

group B

1 4.6
A blood type with the B marker on red blood cells
  • noun
  • /ɡruːp biː/
  • Specialized
translation icon : grupo B
  • For the index trials, the median midpoint number of events was only 18 in group A and 15 in group B.

Examples

  • Effect sizes (magnitude of the differences) were large when comparing the control group with group A (ES = 1.25) and group B (ES = 0.78).

    Academic text (1992)

  • We call them phenotypes, and we have Group A, Group B, group O, and group AB.

  • Katharina Brow would be identified as blood group B.

    Conviction (2010)

  • Katharina Brow would be identified as blood group B.

  • In clinical studies, patients with blood group B showed different responses than those with group A.

  • Individuals with blood group B can donate blood to those with blood types AB and B.

Synonyms

B
vsgroup B
12 3.7

A blood group whose red cells have the B marker

is identical in meaning and focus in this description
type B
vsgroup B
  • Specialized
5 4.4

A blood group with B marks on red cells and no A marks

focuses on plasma anti-A antibodies rather than absence of the A antigen

Surface Forms

group B singular
group Bs plural

Morphology

group + B

The meaning is directly and compositionally derived from 'group' (a category/unit) and 'B' (the blood-group label), so a learner who knows both constituents can infer it refers to blood type B. This noun+label combination is cross-linguistically common and non-idiomatic, requiring no special cultural or metaphorical knowledge.

Etymology

The term group B comes from early scientists who found different markers on red blood cells and named them with letters like A and B. People whose blood had the 'B' marker were called group B, so today it means blood that carries that B marker.