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

Then there’s the risk of infertility for the 15% of women with the RH negative blood type.

From Washington Times

If you have it, you’re Rh positive; if not, you’re Rh negative.

From Los Angeles 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

He also told us about people with cancer who needed expensive drugs and a pregnant woman he knew with RH- negative blood whose baby would probably die pretty much no matter what, and old people, some of whom would die sooner or later of strokes and heart attacks or lack of drugs, and some who already had.

From Literature