| Acronym | Meaning |
 | AH | Attack Helicopter |
| YPA | Yards Per Pass Attempt (football Statistic) |
| IHH | Idiopathic Hypogonadotropic Hypogonadism |
| USNB | United States Naval Base |
| GRP | Graphite Reinforced Plastic |
| TT | Teratesla -Terrestrial Time - Tourist Trophy (Motorcycle Sport) -Trinidad And Tobago (ISO 3166 Digram) |
| KT | Christmas Island (FIPS 10-4 Territory Code) -Knight Of The Order Of The Thistle - Knights Templar |
| SFOB | Special Forces Operations Base |
| POTS | Plain Old Telephone Service (cf. PANS) - Postural Orthostatic Tachycardia Syndrome |
| ACM | Many |
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