24-letter words containing a, u, v, o
- ventricular fibrillation — Pathology. a cardiac arrhythmia characterized by rapid, chaotic electrical impulses to the ventricles, incomplete ventricular contractions, and resultant loss of pulse and blood pressure.
- virtual home environment — (VHE) A tool for using NFS on HP UX.
- virtual software factory — (programming, tool) (VSF) A product from Systematica which allows users to develop CASE tools appropriate to any software engineering methodology.
- virtual storage extended — (operating system) (VSE, formerly DOS/VSE) is a multitasking, IBM 370-architected operating system similar to Multiple Virtual Storage (MVS). VSE run jobs in partitions rather than address spaces, and uses POWER for input/output rather than JES, but is largely similar to MVS. Subsequent VSE/ESA releases gave VSE the XA-370 channel architecture, 31-bit virtual and real storage support, and data spaces. VSE is the IBM operating system on one-third of installed IBM 4381s and a significant proportion of IBM 9370s as well. It offers transaction processing and batch processing capabilities well beyond Virtual Machine's current capabilities, and has a close affinity with MVS.
- visual component library — (programming) VCL A application framework library for Microsoft Windows and Borland Software Corp.'s Delphi and C++Builder rapid application development software. VCL was originally designed for Delphi but is now also used for C++Builder. This replaces OWL Object Windows Library as Borland's Windows C++ framework of choice. VCL encapsulates the C-based Win32 API into a much easier to use, object-oriented form. Like its direct rival, Microsoft Foundation Class Library (MFC), VCL includes classes to create Windows programs. The VCL component class can be inherited to create new VCL components, which are the building blocks of Delphi and C++Builder applications. VCL components are somewhat in competition with ActiveX controls, though a VCL wrapper can be created to make an ActiveX control seem like a VCL component.
- volume table of contents — (storage) (VTOC) /V-tock/ A special file on a disk, which contains a list of all the ordinary files on the disk and their addresses. Also called a directory. The term is used mostly with large mainframe disk drives. Storage administrators will often refer to the VTOC to obtain information on the number of files stored on a disk.
- voluntary aid detachment — (in World War I) an organization of British women volunteers who assisted in military hospitals and ambulance duties