Rh factor

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Rh factor /ˌɑɚˈeɪtʃ-/ noun
Rh factor
/ˌɑɚˈeɪtʃ-/
noun
Learner's definition of RH FACTOR
[noncount] medical
: a substance that is present in the red blood cells of most people
◊ If you do not have Rh factor in your blood, you can become ill by receiving blood from someone who has Rh factor.
called also Rhesus factor
see also rh-negative, rh-positive
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