Definitions

Rh factor

[ahr-eych fak-ter] / ˈɑrˈeɪtʃ ˌfæk tər /

NOUN

blood group antigen

Synonyms

WEAK

Rh antigen Rh-negative Rh-positive Rh-type Rhesus factor antigen blood group

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In addition, red blood cells may have a protein called Rh factor.

From Los Angeles Times • Jul. 9, 2020

Four percent of African Americans have type O blood and a negative Rh factor, 5−10 percent of African Americans have the Rh– factor, and 51 percent have type O blood.

From Textbooks • Mar. 27, 2020

In 1937, Landsteiner and Alexander Wiener identified another essential feature of blood, the Rh factor, which explained blood incompatibilities between certain mothers and fetuses—a leading cause of stillbirths at the time.

From The New Yorker • Jan. 7, 2019

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 • Dec. 18, 2014

The woman's Rh-negative blood then develops antibodies to destroy the alien Rh factor.

From Time Magazine Archive