24-letter words containing o, p, a, c, i
- sequentially compact set — a set in which every sequence has a subsequence that converges to a point of the set.
- serial interface adaptor — (SIA) The Ethernet driver chip used on a Filtabyte Ethernet card.
- single european currency — the official currency, also known as the Euro, of some of the members of the European Union
- six nations championship — the annual competition involving national sides representing England, France, Ireland, Italy, Scotland, and Wales. Until the admission of Italy in 2000, it was known as the Five Nations Championship
- skeleton in the cupboard — a scandalous fact or event in the past that is kept secret
- socialist workers' party — one of the biggest extreme left wing parties in Britain
- special checking account — a checking account that requires no minimum balance but in which a small charge is made for each check issued or drawn and for monthly maintenance.
- special development area — an area earmarked for special development by the government
- stereographic projection — a one-to-one correspondence between the points on a sphere and the extended complex plane where the north pole on the sphere corresponds to the point at infinity of the plane.
- supportive psychotherapy — a type of psychotherapy that seeks to reduce psychological conflict and strengthen a patient's defenses through the use of various techniques, as reassurance, suggestion, counseling, and reeducation.
- synchronous graphics ram — Synchronous Graphics Random Access Memory
- telephony user interface — (communications) (TUI) Either a software interface to telephony (e.g. a phone-capable PC) or a DTMF-based interface to software (e.g. voicemail).
- telescope user interface — (hardware, interface) (TUI) A remote control interface for a telescope.
- the villain of the piece — If you say that someone is the villain of the piece, you are saying in a slightly humorous way that they are seen by some people as the cause of all the trouble in a particular situation.
- thompson sub-machine-gun — a .45 calibre sub-machine-gun
- to light the touch paper — if someone lights the touch paper or lights the blue touch paper, they do something which causes anger or excitement
- to pick someone's brains — If you pick someone's brains, you ask them to help you with a problem because they know more about the subject than you.
- to play your cards right — If you say that someone will achieve success if they play their cards right, you mean that they will achieve success if they act skilfully and use the advantages that they have.
- tri-nations championship — (from 1996–2011) the annual tournament in which the national sides representing Australia, New Zealand, and South Africa compete; in 2012 Argentina entered and the competition became the Rugby Championship
- tuva autonomous republic — an autonomous republic in the Russian Federation in Asia: formerly an independent republic in Mongolia. 65,810 sq. mi. (170,500 sq. km). Capital: Kyzyl.
- variable pitch propeller — a propeller in which the angle of the blades with regard to air flow can be adjusted while it is in operation
- 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.
- yellow-bellied sapsucker — a woodpecker, Sphyrapicus varius, of eastern North America, having a red patch on the forehead and black and white plumage with a pale-yellow abdomen, and feeding on sap from trees.