RH

Look up RH or Rh in Wiktionary, the free dictionary.

RH, Rh, rH, or rh may refer to:

Companies

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

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
R_H, the Rydberg constant for hydrogen
Riemann hypothesis, an important unsolved problem in mathematics

Places

RH postcode area, in the UK
Republika Hrvatska, an official name of Croatia in Croatian language

Other uses

Rh (digraph)
The Right Honourable, an honorific preceding a name in the UK

See also

Royal Hospital (disambiguation)

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