Dictionary
1Rh
adjective \ˌär-ˈāch\
Definition of RH
: of, relating to, or being an Rh factor <Rh antigens> <Rh sensitization in pregnancy>
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First Known Use of RH
1940
2Rh
symbol
Definition of RH
rhodium
RH
abbreviation
Definition of RH
1
relative humidity
2
right hand; right hander
See RH defined for English-language learners
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