sort by Rank | Alpha
| Possible Meanings | Rank |
| Of Occupational Therapy | **** |
| Ophthalmic Technology Assessment | **** |
| Oceanside Tourism Association | **** |
| Of the Agreement | **** |
| Open Travel Alliance | **** |
| Old Timers Association | **** |
| Online Technology Assessment | **** |
| Of Technology Assistance | **** |
| Office of Tribal Affairs | **** |
| Occupational Therapy Association | **** |
| Operation Troop Appreciation | **** |
| Online Trading Academy | **** |
| Organized Team Activities | **** |
| Occupational Therapy Assistants | **** |
| Operation Troop Aid | **** |
| Old Town Association | **** |
| Ontario Trucking Association | **** |
| Occupational Therapist Assistant | **** |
| Operation and to Assist | *** |
| Optical Tube Assemblies | *** |
| Originating and Terminating Access | *** |
| Oracle Training Administration | *** |
| One Thing Audio | *** |
| Ohio Theatre Alliance | *** |
| Ohio Township Association | *** |
| Old Testament Abstracts | *** |
| Office of the Assistant | *** |
| Outdoor Training Academy | *** |
| Operational Transconductance Amplifiers | *** |
| Oil Technologists Association | *** |
| Ohio Travel Association | *** |
| OF TECHNOLOGY APPLICATIONS | *** |
| Oklahoma Technology Association | *** |
| Over Time Allowance | *** |
| Ottumwa Transit Authority | *** |
| Open Technology Assembly | *** |
| Office of the Tenant Advocate | *** |
| Officers Training Academy | *** |
| Office of Technological Assessment | *** |
| Operation Triggered Architecture | *** |
| operation-triggered architecture | *** |
| Open Terminal Architecture | *** |
| Ontario Taekwondo Association | *** |
| Ohio Taxpayers Association | *** |
| Outstanding Teacher Awards | *** |
| Orthopedic Trauma Association | *** |
| Oregon Trucking Associations | *** |
| Ohio Trucking Association | *** |
| Outreach and Training | *** |
| OKLAHOMA TRANSPORTATION AUTHORITY | *** |
| official travel agent | *** |
| Oklahoma Telephone Association | *** |
| Operatore Tecnico Assistenziale | *** |
| Oregon Trucking Association | *** |
| Ohio Telecom Association | *** |
| Oregon Toxics Alliance | *** |
| Other Transaction Agreement | *** |
| Omaha Tennis Association | *** |
| One True Application | *** |
| Opportunities for Trade and Aid | *** |
| Office for Technology Assessment | *** |
| Office of the Telecoms Adjudicator | *** |
| Oregon Telecommunications Association | *** |
| Office of Technology Alliances | *** |
| Occupational Therapy Assisting | *** |
| Office of Technical Assessment | *** |
| of textiles and | *** |
| Occupational Therapy Asst | ** |
| Office of Tax Appeals | ** |
| obliterative transplant arteriopathy | ** |
| oligo-terato-astenospermic | ** |
| oligo-terato-asthenozoospermia | ** |
| Operative transluminal angioplasty | ** |
| Order to Apprehend | ** |
| oropharyngeal topical anaesthesia | ** |
| Open Test Architecture | ** |
| Olympic Transport Authority | ** |
| Occupational Therapy Associates | ** |
| 3H]-ochratoxin A | ** |
| Orthopaedic Trauma Association's | ** |
| OT receptor antagonist | ** |
| Otterburn Training Area | ** |
| oxytocin receptor antagonist | ** |
| Only Trucking Association | ** |
| Or Transfer to an Alternate | ** |
| Office of Technology Administration | ** |
| Oil Tankers Association | ** |
| Online Travel Agencies | ** |
| Oklahoma Thoroughbred Association | ** |
| Operational Test Agencies | ** |
| Onitsha Traders Association | ** |
| Outcome Technology Associates | ** |
| Overall Timing Accuracy | ** |
| Other Than American | ** |
| Optimization Theories and Applications | ** |
| Omeir Travel Agency | ** |
| Orthopedic Therapy Associates | ** |
| Occupational Therapy Advanceweb | ** |
| Ontario Trappers Association | ** |
| Other Transactions Authority | ** |
| Oklahoma Trucking Association | ** |
| Oakes Test Area | ** |
| One of the Asthmatics | ** |
| Organizations an Archive | ** |
| Oblong Trail Association | ** |
| Oregon Technology Alliance | ** |
| Orthogonal Transfer Array | ** |
| Outstanding Technical Achievement | ** |
| Open Transport Apple | ** |
| Only Trade Association | ** |
| Oxidations Toleranz Analyse | ** |
| Overfly Top Attack | ** |
| Other Transaction Authorities | ** |
| Over Target Area | ** |
| Ohio Township Administrators | ** |
| Outstanding Travel Advances | ** |
| Operator Terminal Adapter | ** |
| Open Travel Association | ** |
| Oregon Transit Association | ** |
| Ot Technology Assessment | ** |
| Outstanding Teaching Awards | ** |
| Office of Technology Agency | ** |
| Omnidirectional Transmitter Antenna | ** |
| Output Trip Alarm | ** |
| Oil Trading Association | ** |
| Olympic Theatre Arts | ** |
| One Touch Administration | ** |
| Operational Tranconductance Amplifier | ** |
| Or the Transmission | ** |
| Oregon Truckers Association | ** |
| Othopedic Trauma Association | ** |
| Occupational Training Australia | ** |
| Office for Transportation Access | ** |
| One Time Authorization | ** |
| Operation Triggered Architectures | ** |
| Orwegian Telecommunications Administration | ** |
| Outstanding Teaching Assistant | ** |
| Ohio Taekwondo Association | * |
| Omega Trust Association | * |
| One Time Activity | * |
| Ontario Telephone Association | * |
| Operational Test Activity | * |
| Outstanding Teachers Academy | * |
| One Time Affair | * |
| Option to Take A | * |
| Oregon Telehealth Alliance | * |
| Owen Thomas Associates | * |
| Oklahoma Transit Association | * |
| On TLC Analyses | * |
| Online Teaching Assistants | * |
| Of Transconductance Amplifiers | * |
| Ofce of Technology Assessment | * |
| Office of Test Administration | * |
| Office of Threat | * |
| Office of Transportation Administration | * |
| Online Transport Archive | * |
| Optical Tape Archive | * |
| Ortho Toluic Acid | * |
| Office of Temporary Assistance | * |
| Oklahoma Trap Association | * |
| onsite technical assistance | * |
| Operational Test Agent | * |
| Orchard Tuition Agency | * |
| Out the Airlock | * |
| Ohio Telephone Association | * |
| ochratoxins ochratoxin A | * |
| Oran Tafaraoui Airport | * |
| Oval Transport Authority | * |
| Object Technology Applications | * |
| Objective Technical Architecture | * |
| Obligations to Transfer Assets | * |
| Office of Technology Applications | * |
| Office of Technology Assesment | * |
| Office of Technology Assessement | * |
| Office of Technology Assistance | * |
| Office of Tribal Activities | * |
| Old Timers Antiques | * |
| Opportunity Threat Analisys | * |
| Owner Trident Armory | * |