17-letter words containing p, i, o, t
- trick photography — photography that creates an illusion
- triskaidekaphobia — fear or a phobia concerning the number 13.
- tropical aquarium — an aquarium designed for the maintenance and breeding of tropical fish and kept at a suitably warm temperature.
- tropical maritime — a type of warm, wet air mass originating at low latitudes over ocean areas
- tropical medicine — the branch of medicine dealing with the study and treatment of diseases occurring in the tropics.
- ultrametamorphism — metamorphism during which the temperature of a rock exceeds its melting point.
- uncompassionately — having or showing compassion: a compassionate person; a compassionate letter.
- unconformity trap — An unconformity trap is a hydrocarbon trap where the closure is made by an unconformity (= a formation of rock layers which represents a gap in the geological record).
- uncooperativeness — working or acting together willingly for a common purpose or benefit.
- undercompensation — to compensate or pay less than is fair, customary, or expected.
- unemployment line — When people talk about the unemployment line, they are talking about the state of being unemployed, especially when saying how many people are unemployed.
- unify corporation — (company) Developers of the Unify relational database. At one time, before Sybase, they were a competitor of Oracle, et al.
- unix to unix copy — (networking, messaging) (uucp) A Unix utility program and protocol that allows one Unix system to send files to another via a serial line which may be a cable going directly from one machine's serial port to another's or may involve a modem at each end of a telephone line. Software is also available to allow uucp to work over Ethernet though there are better alternatives in this case, e.g. FTP or rcp for file transfer, SMTP for electronic mail or NNTP for news. The term is now also used to describe the large international network which uses UUCP to pass Usenet news and electronic mail, also known as "UUCPNET". See also cu, uuencode.
- unproportionately — proportioned; being in due proportion; proportional.
- upper paleolithic — See under Paleolithic.
- urban exploration — a recreational activity in which people explore derelict urban structures such as abandoned sewers or underground railways or attempt to access areas which are closed to the public such as the roofs of skyscrapers
- utopian socialism — (sometimes initial capital letter) an economic system based on the premise that if capital voluntarily surrendered its ownership of the means of production to the state or the workers, unemployment and poverty would be abolished.
- vacant possession — ownership of an unoccupied house or property, any previous owner or tenant having departed
- vacuum aspiration — menstrual extraction.
- vitamin b complex — an important group of water-soluble vitamins containing vitamin B 1 , vitamin B 2 , etc.
- vittore carpaccio — Vittore [veet-taw-re] /vitˈtɔ rɛ/ (Show IPA), c1450–1525, Venetian painter.
- warehouse receipt — a receipt for goods placed in a warehouse.
- weapons inspector — a person who inspects a country's weapons
- wedding reception — party after a marriage
- well-proportioned — adjusted to proper proportion or relation.
- wild sweet potato — man-of-the-earth.
- winter heliotrope — a creeping perennial, Petasites fragrans, related to the butterbur, having lilac to heliotrope-coloured flowers smelling of vanilla: found chiefly on road verges
- wireless operator — a radio operator
- without exception — all included
- without prejudice — fairly
- wood preservative — a coating applied to timber as a protection against decay, insects, weather, etc
- xerox corporation — (company) A US company, founded in 1906, specialising in document related technology and services including photocopiers, printers and office software. Xerox's acquisition of Affiliated Computer Services added business process and document management to their product range. In 2013 they have 140,000 employees. Their research centre, XEROX PARC, prototyped several revolutionary advances in computing, which the company failed to exploit, including the WIMP desktop metaphor and XEROX Network Services.
- yield the palm to — to acknowledge the superiority of; admit to defeat by
- youth programming — the creation and scheduling of television programmes specifically aimed at young people
- zero-point energy — energy in a substance at the temperature of absolute zero.
- zygomatic process — any of several bony processes that articulate with the cheekbone.