| Acronym | Meaning |
 | APHA | American Public Health Association |
| COGENT | Cognitive Objects Within A Graphical EnviroNmenT |
| BTIS | Battlefield Target Identification System |
| KGS | Kyrgyz Som (ISO 4217 Currency Code) |
| BMX | Bicycle/Bike Moto(r) Cross |
| O | Oberst - Observer - Obstacle - Octal - Officer - Official - Oh - Operational - Operator - Oprah (magazine) - Outstanding -Oxygen |
| JSP | JavaServer Page |
| APDS | Armour-Piercing |
| NAN | Not A Number (computing) |
| TLS | Timor-Leste (ISO 3166 Trigram) -Times Literary Supplement |
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