Rh–positive

Rh–positive /ˌɑɚˌeɪtʃˈpɑːzətɪv/ adjective
Rh–positive
/ˌɑɚˌeɪtʃˈpɑːzətɪv/
adjective
Britannica Dictionary definition of RH–POSITIVE
medical
: having Rh factor in the blood