20-letter words containing f, r, u, i
- member of the public — a member of the general population
- mitral insufficiency — abnormal closure of the mitral valve resulting in regurgitation of blood into the atrium and leading to reduced heart function or heart failure.
- most general unifier — (logic) If U is the most general unifier of a set of expressions then any other unifier, V, can be expressed as V = UW, where W is another substitution. See also unification.
- music of the spheres — a music, imperceptible to human ears, formerly supposed to be produced by the movements of the spheres or heavenly bodies.
- naturalistic fallacy — the supposed fallacy of inferring evaluative conclusions from purely factual premises
- occupation franchise — the right of a tenant to vote in national and local elections
- officer of the guard — an officer, acting under the officer of the day, who is responsible for the instruction, discipline, and performance of duty of the guard in a post, camp, or station. Abbreviation: OG, O.G.
- paper qualifications — qualifications gained through official examinations, etc, rather than through experience
- pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
- parallel of altitude — almucantar.
- parallel of latitude — parallel (def 9).
- particulars of claim — (in England) the first reading made by the claimant in a county court action, showing the facts upon which he or she relies in support of a claim and the relief asked for
- period of revolution — a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany.
- permonosulfuric acid — persulfuric acid (def 1).
- polymorphic function — a function in a computer program that can deal with a number of different types of data
- prefecture apostolic — a territory in the early stage of missionary development.
- probability function — the function the values of which are probabilities of the distinct outcomes of a discrete random variable
- proof of the pudding — the true value or quality of something, as seen when it is experienced, tried, or put to use: The proof of the pudding for a business is what customers say about it.
- public record office — an institution in which official records are stored and kept available for inspection by the public
- quantum field theory — any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.
- queen of the prairie — a tall plant, Filipendula rubra, of the rose family, having branching clusters of pink flowers, growing in meadows and prairies.
- recuperative furnace — a furnace having its incoming air heated by exhaust gases, the passage of air and gases through the furnace being always in the same direction.
- recursive definition — a definition consisting of a set of rules such that by repeated application of the rules the meaning of the definiendum is uniquely determined in terms of ideas that are already familiar.
- red mercuric sulfide — a crystalline, water-insoluble, poisonous compound, HgS, occurring as a coarse, black powder (black mercuric sulfide) or as a fine, bright-scarlet powder (red mercuric sulfide) used chiefly as a pigment and as a source of the free metal.
- refuse disposal unit — a unit or part of a sink that disposes of waste food, etc, by grinding
- regenerative furnace — a furnace in which the incoming air is heated by regenerators.
- republic of maldives — a republic occupying an archipelago of 1087 coral islands in the Indian Ocean, southwest of Sri Lanka: came under British protection in 1887; became independent in 1965 and a republic in 1968; member of the Commonwealth (1982–2016). The economy and infrastructure were severely damaged in the Indian Ocean tsunami of December 2004. Official language: Divehi. Official religion: (Sunni) Muslim. Currency: rufiyaa. Capital: Malé. Pop: 393 988 (2013 est). Area: 298 sq km (115 sq miles)
- return of the native — a novel (1878) by Thomas Hardy.
- ring of the nibelung — Richard Wagner's tetralogy of music dramas: Das Rheingold (completed 1869), Die Walküre (completed 1870), Siegfried (completed 1876), and Götterdämmerung (completed 1876): the cycle was first performed at Bayreuth, 1876.
- ring wall foundation — A ring wall foundation is a base made of concrete, used to put large tanks on.
- sb's future lies swh — If you say that someone's future lies in a particular place or activity, you think they will be most successful or happy in that place or doing that activity.
- serious fraud office — a UK government office responsible for investigating and prosecuting serious fraud cases
- sing for your supper — If someone has to sing for their supper, they have to do a job before they are allowed to do something they want to do.
- sodium fluoroacetate — a white, amorphous, water-soluble, poisonous powder, C 2 H 2 FO 2 Na, used as a rodenticide.
- square of opposition — a diagrammatic representation of the opposition of categorical propositions.
- squirrel's-foot fern — ball fern.
- surface-active agent — any substance that when dissolved in water or an aqueous solution reduces its surface tension or the interfacial tension between it and another liquid.
- tax-deferred annuity — an annuity that enables one to purchase an insurance product that will earn interest, with the tax obligation deferred until withdrawals begin, usually at retirement. Abbreviation: TDA.
- the founding fathers — any of the men who were members of the U.S. Constituional Convention of 1787
- the gnomes of zurich — Swiss bankers and financiers
- this time, for sure! — (exclamation) Ritual affirmation frequently uttered during protracted debugging sessions involving numerous small obstacles (e.g. attempts to bring up a UUCP connection). For the proper effect, this must be uttered in a fruity imitation of Bullwinkle J. Moose. Also heard: "Hey, Rocky! Watch me pull a rabbit out of my hat!" The canonical response is, of course, "But that trick *never* works!" See hacker humour.
- to burst into flames — If something bursts into flames or bursts into flame, it suddenly starts burning strongly.
- too much information — I don't want to hear any more
- treasury certificate — an obligation of the U.S. government represented by certificates in denominations ranging from $1000 to $1,000,000, maturing in one year or less with interest periodically payable by the redemption of coupons.
- uncertificated share — a share of a mutual fund credited to the account of a shareholder without the physical issuance of a certificate evidencing ownership.
- unemployment figures — statistics relating to the number of people who are out of work
- unified field theory — electroweak theory.
- unified screw thread — a screw thread system introduced for defence equipment (1939–44), in which the thread form and pitch were a compromise between British Standard Whitworth and American Standard Sellers: adopted by the International Standards Organization
- uniform crime report — an annual report issued by the FBI that presents data on selected categories of crimes reported to the police. Abbreviation: UCR.
- universal quantifier — a quantifier indicating that the sentential function within its scope is true for all values of any variable included in the quantifier.