- RHR
- Resting Heart Rate (Medical » Physiology)* Rabbis for Human Rights (Community » Religion)* Rector-Hayden, Realtors (Business » Firms)* Radical History Review (Community » Religion)* Right Hand Rule (Academic & Science » Physics)* Rural Hillside Residential (Community)* Round Hill Ranch (Business » Firms)* Ron Hermione Romance (Community » Media)* Relative Hazard Reduction (Academic & Science » Mathematics)* Rageth Human Resources (Business » Firms)
Abbreviations dictionary. 2012.