| Acronym | Meaning |
 | EFL | English As A Foreign Language |
| IFOV | Instantaneous Field Of View |
| GNU | GNU's Not Unix |
| FHI | Family Health International |
| O | Oberst - Observer - Obstacle - Octal - Officer - Official - Oh - Operational - Operator - Oprah (magazine) - Outstanding -Oxygen |
| RTGS | Royal Thai General System Of Transcription - Real Time Gross Settlement |
| JU | Juan De Nova Island (FIPS 10-4 Territory Code) |
| DTI | UK Department Of Trade And Industry |
| LORTID | LOng Range Target IDentification |
| KUW | Kuwait (UNDP Country Code) |
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