RH


Meaning of RH in English

I. ˌär-ˈāch adjective

Date: 1940

: of, relating to, or being an Rh factor

Rh antigens

Rh sensitization in pregnancy

II. symbol

rhodium

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.