| Acronym | Meaning |
| GA | Irish Language (ISO 639-1 Code) |
| CME | Coronal Mass Ejection (usually Sun) |
| HTML | HyperText Markup Language |
| R&D | Research & Development |
| ARRC | ACE Rapid Reaction Corps |
| ACM | Many |
| N | Newton - Nitrogen - North |
| AFS&A OR AFSA | U.S. Air Force Studies And Analysis |
| DIP | Dual In-line Package (electronics) |
| FCM | Federation Of Canadian Municipalities - Fogarty's Cove Music |