| Acronym | Definition |
|---|
| ARCMA➣Adaptive Request Channel Multiple Access |
| ARCMA➣Arc Media Associates, Ltd. (UK) |
| ARCMA➣Attack-Resilient Collaborative Message Authentication (network security) |
| ARCMA➣Association Revermontoise pour la Conservation des Mécaniques Anciennes (French: Revermontoise Association for the Preservation of Vintage Motorsports) |