What does RAH stand for?

Rabbit Anti-Human - Immunology

Rabha - Language symbol (ETLW)

Radiation Alarm High (SAUS)

Radiation-Anneal Hardening - Alloy

Rafha - Saudi Arabia - Airport symbol (OAG)

Ralcorp Holdings - NYSE symbol (SAG)

Ravish - Telegraphy (PCTE)

Receipt, Excess, Adjustment, Due-In History File - Army

Receiving Array Hydrophone

Reconnaissance Attack Helicopter

Regent Air - Canada - ICAO designator (FAAC)

Regressing Atypical Histiocytosis - Medicine

Reviews in American History - A publication (BRI)

Right Anterior Hemiblock - Medicine (AAMN)

Right Atrial Hypertrophy - Cardiology

Royal Albert Hall - London, England