| Acronym | Meaning |
 | CGIG | Cross-Government Implementation Group |
| PYG | Paraguayan Guarani (ISO 4217 Currency Code) |
| NOAO | National Optical Astronomy Observatory |
| AC | Adriamycin-Cyclophosphamide (chemotherapy) - Air Conditioning - Alternating Current - Ante Christum (Latin |
| FZRA | Freezing Rain (METAR Code) |
| WWJD | What Would Jesus Do? (see WWWD) |
| YC | Yoctocoulomb |
| ICRISAT | International Crops Research Institute For The Semi-Arid Tropics |
| HRT | Hormone Replacement Therapy |
| DTL | Diode-Transistor Logic (electronics) |
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