Rh negative

or Rh-neg·a·tive

[ ahr-eych neg-uh-tiv ]

adjective

1. Rh factor

Rh negative

noun

1. blood that does not contain the Rh factor
2. a person having such blood

Word History and Origins

Origin of Rh negative¹

First recorded in 1955–60

Example Sentences

Local and regional blood banks are particularly low on platelets and types O and Rh negative blood, the department said Wednesday.

From Seattle Times

Looking at just the Rh factor, the team found that diabetes risk was the same whether or a not a woman was Rh positive or Rh negative.

From US News

If the mother has Rh negative blood but the baby is Rh positive she can develop antibodies to her baby´s blood during labour.

From BBC