| Acronym | Meaning |
 | PH | Passive Homing (missile Guidance System) -petahenry - Philippines (ISO 3166 Digram) -Probability Of Hit - Public Health - Purple Heart |
| POTS | Plain Old Telephone Service (cf. PANS) - Postural Orthostatic Tachycardia Syndrome |
| RE | Rhenium |
| CCSIL | Command And Control Simulation Interface Language (cecil) |
| BPM | Beats Per Minute |
| WFF | Wallops Flight Facility |
| FPF | Final Protective Fire |
| OB | Obedience - Obligation - Obligatory - Obsolete - Obstetrics -Ocean Beach (California) - Off Break (cricket) - Old Bryanstonian - Order Of Battle - Outlet Box (electrical) -Overbought (stock Market) -Oversight Board |
| WMD | Weapon[s] Of Mass Destruction - World Movement For Democracy ? |
| NIAAA | U.S. National Institute On Alcohol Abuse And Alcoholism |
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