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RH 
Summary
Look up RH or Rh in Wiktionary, the free dictionary.
RH, Rh, rH, or rh may refer to:
Companies edit
- Red Hat, an American software company
- Republic Express Airlines (IATA designator), a cargo airline in Indonesia
- RH (company), an American furniture chain formerly known as Restoration Hardware
Science and technology edit
- Relative humidity, the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature
- Releasing hormone
- Rh blood group system (Rhesus factor), a classification to describe blood types in humans
- Rhodium, symbol Rh, a chemical element
- RH, the Rydberg constant for hydrogen
- Riemann hypothesis, an important unsolved problem in mathematics
- Adobe RoboHelp, an Adobe software
Places edit
- RH postcode area, in the UK
- Republika Hrvatska, an official name of Croatia in Croatian
Other uses edit
- Rh (digraph)
- The Right Honourable, an honorific preceding a name in the UK
- Radical honesty, the practice of always being completely honest and refraining from telling even white lies