English edit

Etymology edit

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

Adjective edit

Rh-null (not comparable)

  1. Pertaining to the Rh-null syndrome, or blood produced by the syndrome.

Related terms edit

  • 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 edit

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 edit