| Subject | English | Thesaurus |
| mil., abbr. | Advanced Sensor Applications Program | ASAP |
| el., abbr. | Advanced Stepper Application Program | ASAP |
| mil., abbr. | Advanced Turbine Technology Application Program | ATTAP |
| energ.ind., abbr. | Advanced Water Breeder Applications Program | AWBA |
| abbr., Makarov. | Advisory Committee on Climate Applications and Data Program | ACCAD |
| ecol., abbr. | Advisory Committee on Climate Applications Program | ACCAD |
| busin., abbr. | Alcatel Application Partner Program | AAPP |
| astr., abbr. | Apollo Application Program | AAP |
| abbr. | Apollo Applications Program | AAP (программа по применениям КА "Аполлон" (НАСА) Углов) |
| abbr. | application alignment service | app alignment service (ssn) |
| softw., abbr. | Application Assembly Tool | AAT |
| IT, abbr. | Application Control Architecture Services | ACAS (DEC) |
| abbr., astronaut. | Application Development and Research Opportunity Programme | ADRO (RADARSAT) |
| abbr., commun. | Application Feature Server | AFS |
| abbr. | application layer gateway service | app layer gateway service (ssn) |
| comp., abbr. | Application Print Services | APS |
| abbr., comp. | application program | app (Andrey Truhachev) |
| IT | application program | A program that processes business data through activities such as data entry, update or query (Contrasts with systems programs, such as an operating system or network control program, and with utility programs such as copy or sort) |
| telecom., abbr. | Application Program | AP |
| abbr., post | Application Program Interface | API (standard software interface to a computer program) |
| IT, abbr. | Application Program Interface | API (API) |
| abbr., file.ext. | Application Program Interface | API |
| abbr., file.ext. | Application Program Interface file | API (Adobe Acrobat) |
| IT, abbr. | Application Program to Program Converter | APPC (IBM) |
| IT, abbr. | Application Program to Transaction Manager | APTM (TP) |
| abbr., file.ext. | Application Programs | AP |
| comp., net., abbr. | Application Provider Services | APS |
| comp., net., abbr. | Application Services Environment | ASE |
| IT, abbr. | Application Transaction Program | ATP (IBM, APPC) |
| telecom., abbr. | Application Transaction Program | ATP |
| comp., MS | Application XML | AXL (An XML-based serialization format used by SharePoint-based servers to represent Access Services database applications. It includes database properties, queries, forms, reports, and macros) |
| abbr., scottish | Assistant General Manager for Military Applications | AGMMA (USA) |
| abbr. | Automated Staffing Application Program | ASAP |
| IT, abbr. | Biometric Application Program Interface | BAPI (API, MS) |
| mil., abbr. | Bureau of Military Application of Scientific Research | BMASR |
| ecol., abbr. | Climate Applications Program | CAP |
| NASA, abbr. | Co Optimized Booster For Reusable Applications | COBRA |
| abbr. | Common Applications and Tools Integration Services | CATIS |
| IT, abbr. | Common Speller Application Program Interface | CSAPI (API) |
| IT, abbr. | Communication Application Program Interface | CAPI (ISDN, API) |
| comp., MS | Computer Supported Telecommunications Applications An international standard established by the European Computer Manufacturers Association (ECMA) that specifies an application's interface and protocols for monitoring and controlling calls and devices in a communications network | CSTA (Computer Supported Telecommunications Applications) |
| comp., MS | Computer Supported Telecommunications Applications | CSTA (An international standard established by the European Computer Manufacturers Association (ECMA) that specifies an application's interface and protocols for monitoring and controlling calls and devices in a communications network) |
| comp., MS | Cryptography Application Programming Interface | CryptoAPI (An (API) that is provided as part of Microsoft Windows. CryptoAPI provides a set of functions that allow applications to encrypt or digitally sign data in a flexible manner while providing protection for the user's sensitive private key data. Actual cryptographic operations are performed by independent modules known as (CSPs)) |
| softw., abbr. | Data Capture and Processing Application | DCPA |
| el., abbr. | Defence Systems Application Program | DSAP |
| mil., abbr. | Defense General Intelligence Applications Program | DGIAP |
| mil., abbr. | Defense Satellite Communications Systems Application Program | DSAP |
| mil., abbr. | Defense Sensor Imagery Application Training Programs | DSIATP |
| mil., abbr. | Defense Sensor Interpretation and Application Training Program | DSIATP |
| mil., abbr. | Division of Military Application | DMA |
| abbr., scottish | Dual Use Applications Program | DUAP (DARPA) |
| ecol., abbr. | Earth and Ocean Physics Application Program | EOPAP |
| IT, abbr. | eXtended Messaging Application Program Interface | XMAPI (API) |
| abbr., file.ext. | Extended Messaging Services Application Programming Interface | EMSAPI |
| abbr. | external application program | external app program (ssn) |
| abbr., file.ext. | Family Application Program Interface | FAPI |
| abbr., comp., MS | Generic Security Services Application Programming Interface A generic API for performing client-server authentication that can be implemented over any authentication system. GSS-API makes it possible for applications to use the same API with different authentication mechanisms | GSS-API (Generic Security Services Application Programming Interface) |
| abbr., astronaut. | Geological Applications of Remote Sensing programme | GARS (UNESCO) |
| abbr., IT | High-Level Language/Application Program Interface | HLLAPI |
| abbr. | HTTP application inspection | HTTP app inspection (ssn) |
| IT, abbr. | Human Authentication Application Program Interface | HAAPI (API) |
| IT, abbr. | Human Authentication Application Program Interface | HA-API (API) |
| abbr., comp., net. | Integrated Database Application Program Interface | IDAPI |
| abbr. | integrated voice termination application | integrated voice termination app (ssn) |
| med. | Investigational New Drug IND Application | A drug sponsor's request to the Food and Drug Administration (FDA) for approval to test an investigational drug in humans. FDA review of an investigational new drug (IND) application ensures that the drug is safe for testing in humans and that testing will not put study participants at unreasonable risk. |
| abbr., file.ext. | Java Management Application Program Interface | JMAPI |
| abbr., file.ext. | License Services Application Program Interface | LSAPI |
| IT, abbr. | Licensed Services Application Program Interface | LSAPI (MS, API) |
| IT, abbr. | Lightweight Directory Access Protocol Application Program Interface | LDAPAPI (LDAP, RFC 1823, API) |
| IT, abbr. | Lightweight Directory Access Protocol Application Program Interface | LDAP API (LDAP, RFC 1823, API) |
| tech., abbr. | Machine and Display Application Program | MDAP |
| abbr., comp., net. | Macintosh Application Services | MAS |
| abbr., astronaut., mil. | Mail Application Program Interface | MAPI (Internet) |
| IT, abbr. | Messaging Application Program Interface | MAPI (MS, WOSA, API) |
| comp., MS | Messaging Application Programming Interface | MAPI (A messaging architecture that enables multiple applications to interact with multiple messaging systems across a variety of hardware platforms. MAPI is built on the Component Object Model (COM) foundation) |
| comp., MS | Messaging Application Programming Interface A messaging architecture that enables multiple applications to interact with multiple messaging systems across a variety of hardware platforms. MAPI is built on the Component Object Model (COM) foundation | MAPI (Messaging Application Programming Interface) |
| comp., MS | Microsoft Visual Studio Tools for Applications | Microsoft® Visual Studio® Tools for Applications (A family of Microsoft Visual Studio add-in software that allows developers to use Visual Basic and Visual C to develop and customize applications built on the Microsoft .NET Framework) |
| comp., MS | Microsoft Visual Studio Tools for Applications | Microsoft Visual Studio® Tools for Applications (A family of Microsoft Visual Studio add-in software that allows developers to use Visual Basic and Visual C to develop and customize applications built on the Microsoft .NET Framework) |
| mil., abbr. | Military Application Division of the Atomic Energy Commission | MADAEC |
| abbr. | Military Applications | MA (Alex Lilo) |
| abbr., astronaut., mil. | National Advanced Remote Sensing Application Program | NARSAP |
| abbr., comp., net. | Native ATM Application Program Interface Connection | API connection |
| softw., abbr. | Network Application Program | NAP |
| abbr., IT | Network Application Program Interface | NAPI |
| IT, abbr. | Network Application Services | NAS (DEC) |
| mil., abbr. | Network Program Determination Application | NPDA |
| med. | New Drug Application NDA | A drug sponsor's request to the Food and Drug Administration (FDA) for approval to sell and market a new drug in the United States. A new drug application (NDA) includes enough information for the FDA to determine whether the new drug is safe and effective; whether the drug's benefits outweigh its risks; whether the proposed drug label (package insert) is appropriate; and whether the drug manufacturing standards are adequate. |
| comp., abbr. | One Dialogue Application | ODA |
| busin., abbr. | Operational Application Support Information Services | OASIS |
| busin., abbr. | Outsourced Application Software And Information Services | OASIS |
| IT, abbr. | Queue Application Program Interface | QAPI (SAP, API) |
| abbr., scottish | Range Applications Joint Program Office | RAJPO (USA) |
| mil., abbr. | Range Applications Joint Program Office | RAJPO |
| abbr., scottish | Rapid prototype of Application Specific Signal Processor programme | RASSP (USA) |
| progr. | safety application service element | SASE (ssn) |
| mil., abbr. | Space Applications Technology Program | SATP |
| IT, abbr. | Special Interest Group for CD-ROM Applications Technology | SIGCAT (CD) |
| IT, abbr. | Special Interest Group for Cd-rom Applications Technology | SIGCAT |
| abbr., file.ext. | Special Interest Group on CD-ROM Applications and Technology | SIGCAT |
| abbr., file.ext. | Speech Application Program Interface | SAPI (Microsoft) |
| abbr., comp. | Speech Recognition Application Program Interface | SRAPI (Vosoni) |
| abbr., file.ext. | Structured N-Dimensional Application Program Interface | SNAPI (Oracle) |
| IT, abbr. | Switched Digital Services Applications Forum | SDSAF (organization) |
| comp., abbr. | System Application Program | SAP |
| IT, abbr. | TALigent Application Program | TALAE (Taligent) |
| abbr., scottish | Technology Application Programme Management | TAPM |
| abbr., scottish | Technology Applications & Services Co. | TAS (USA) |
| IT, abbr. | Telephony Application Program Interface | TAPI (Intel, MS, WOSA, CTI) |
| IT, abbr. | Telephony Services Application Program Interface | TSAPI (AT&T - Novell) |
| abbr., file.ext. | Telephony Services Application Program Interface | TSAPI (AT&T and Novell) |
| abbr., IT | Telephony Services Application Programming Interface | TSAPI |
| el., abbr. | Tool Application Program | TAP |
| abbr., scottish | Training Technology Application Program | TTAP (USA) |
| IT, abbr. | Voyetra Applications Program Interface | VAPI (API) |
| IT, abbr. | Web Services for Interactive Applications | WSIA (OASIS, WWW) |
| comp., net., abbr. | Web Services for Interactive Applications | WSIA |
| abbr., file.ext. | Web Site Application Program Interface | WSAPI (O'Reilly) |
| abbr. | Workshop on Applications and Services in Wireless Networks | ASWN |
| abbr., astronaut. | World Climate Applications and Services Programme | WCASP (proposed title, WMO) |
| abbr., file.ext. | X.400 Application Program Interface Association | XAPIA |
