English

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Etymology

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Rh (Rhesus factor) +‎ null (missing, none)

Adjective

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Rh-null (not comparable)

  1. Pertaining to the Rh-null syndrome, or blood produced by the syndrome.
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  • Rh negative (pertaining to blood missing Rh factor D, one of 61 Rh blood factors)
  • Rh positive (pertaining to blood containing Rh factor D, one of 61 Rh blood factors)

Noun

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Rh-null (uncountable)

  1. Ellipsis of Rh-null blood.; a blood type, in which red blood cells are completely lacking in all antigens of the Rh-blood-typing system (Rh factors), a system of 61 antigen types.

Synonyms

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