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Noun: type O
  1. The blood group whose red cells carry neither the A nor B antigens
    "people with type O blood are universal donors";
    - O, group O

Type of: blood group, blood type

Encyclopedia: Type O

Nearest

type A
type AB
type B
type family
type genus
type I allergic reaction
type I diabetes
type II diabetes
type IV allergic reaction
type metal
type O
type of architecture
type slug
type species
type specimen
typecast
typeface
typescript
typeset
typesetter
typesetter's case