15-letter words containing p, r, i, a
- trifluoperazine — a compound, C 21 H 24 F 3 N 3 S, used as an antipsychotic.
- triple alliance — the alliance (1882–1915) of Germany, Austria-Hungary, and Italy.
- triple integral — an integral in which the integrand involves a function of three variables and which requires three applications of the integration process to evaluate.
- trivial pursuit — a board game that is based the ability to answer questions on popular culture and general knowledge
- tropicalization — to make tropical, as in character or appearance.
- trypanosomiasis — any infection caused by a trypanosome.
- turk's-cap lily — either of two lilies, Lilum martagon or L. superbum, having nodding flowers with the perianth segments rolled backward.
- typographically — of or relating to typography.
- ultra-patriotic — of, like, suitable for, or characteristic of a patriot.
- ultramicroscope — an instrument that uses scattering phenomena to detect the position of objects too small to be seen by an ordinary microscope.
- ultramicroscopy — the use of the ultramicroscope.
- umbrella policy — An umbrella policy is a policy that provides excess limits and gives additional excess coverage over the normal limits and coverage of liability policies.
- unapprehensible — not able to be understood or comprehended
- unary operation — an operation in a mathematical system by which one element is used to yield a single result, as squaring or taking the square root.
- uncomplimentary — of the nature of, conveying, or expressing a compliment, often one that is politely flattering: a complimentary remark.
- uncompromisable — that cannot or should not be compromised
- uncooperatively — in an uncooperative or unhelpful manner
- uncopyrightable — not able to be copyrighted
- undercapitalize — to provide an insufficient amount of capital for (a business enterprise).
- underpopulation — having a population lower than is normal or desirable.
- unfair practice — unfair competition.
- uninterpretable — to give or provide the meaning of; explain; explicate; elucidate: to interpret the hidden meaning of a parable.
- university park — a city in N Texas.
- unix conspiracy — [ITS] According to a conspiracy theory long popular among ITS and TOPS-20 fans, Unix's growth is the result of a plot, hatched during the 1970s at Bell Labs, whose intent was to hobble AT&T's competitors by making them dependent upon a system whose future evolution was to be under AT&T's control. This would be accomplished by disseminating an operating system that is apparently inexpensive and easily portable, but also relatively unreliable and insecure (so as to require continuing upgrades from AT&T). This theory was lent a substantial impetus in 1984 by the paper referenced in the back door entry. In this view, Unix was designed to be one of the first computer viruses (see virus) - but a virus spread to computers indirectly by people and market forces, rather than directly through disks and networks. Adherents of this "Unix virus" theory like to cite the fact that the well-known quotation "Unix is snake oil" was uttered by DEC president Kenneth Olsen shortly before DEC began actively promoting its own family of Unix workstations. (Olsen now claims to have been misquoted.)
- unparliamentary — not parliamentary; at variance with or contrary to the methods employed by parliamentary bodies.
- unparticipative — to take or have a part or share, as with others; partake; share (usually followed by in): to participate in profits; to participate in a play.
- unpatriotically — in a manner that is not enthusiastically supporting one's country and its ways of life
- unpractisedness — the quality or state of being unpractised
- unproportionate — proportioned; being in due proportion; proportional.
- unprotestantize — to make something (e.g. a church, country, etc) a religion other than Protestant
- unsportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- upper arlington — a city in central Ohio, near Columbus.
- upper east side — a section of the East Side of New York City, conventionally between 57th Street and 96th Street, known for its affluence.
- upper peninsula — a peninsula in the northern US between Lakes Superior and Michigan, constituting the N part of the state of Michigan
- upward mobility — movement from one social level to a higher one (upward mobility) or a lower one (downward mobility) as by changing jobs or marrying.
- upwardly mobile — See under vertical mobility (def 1).
- uropygial gland — a gland opening on the back at the base of the tail in most birds that secretes an oily fluid used by the bird in preening its feathers.
- utility program — system software used to perform standard operations, as sorting data or copying data from one file to another, for application programs or other system software.
- vanishing spray — a substance that disperses without trace shortly after it is sprayed onto a surface, used in football to mark a temporary line behind which defenders must stand when a free kick is taken
- variola porcina — an acute infectious viral disease of pigs characterized by skin eruptions
- venture capital — funds invested or available for investment in a new or unproven business enterprise.
- vernier caliper — a caliper formed of two pieces sliding across one another, one having a graduated scale and the other a vernier.
- vernier compass — a compass on a transit (vernier transit) having a vernier for adjusting magnetic bearings to read as true bearings.
- vicar apostolic — Roman Catholic Church. a titular bishop serving either in a district where no episcopal see has been established, or in one where the succession of bishops has been interrupted.
- vicar capitular — a cleric chosen by a cathedral chapter to manage a bishopric during a vacancy.
- vindhya pradesh — a former state in central India: now part of Madhya Pradesh.
- vine phylloxera — a homopterous insect, Phylloxera vitifolia, typically feeding on vine juices
- wallpaper music — music that is pleasant but not interesting, so people do not pay much attention to it
- walpurgis night — (especially in medieval German folklore) the evening preceding the feast day of St. Walpurgis, when witches congregated, especially on the Brocken.
- water pimpernel — the brookweed.