| Meaning | Category |
| Reading Excellence Act | Governmental->US Government |
| Real Estate Agent | Business->Positions |
| Registro de Economistas | International->Spanish |
| Research And Educational Association | Business->Professional Organizations |
| Resources, Events, and Agents | Computing->Networking |
| Restriction Endonuclease Analysis | Medical->Human Genome |
| Retired Educators Association | Business->Professional Organizations |
| Riot Engine Animation | Community->Sports |
| Royal Europe Airlines | Business->Firms |
| Rural Electrification Administration | Governmental->US Government |
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