18-letter words containing u, r, i
- attendance figures — the number of people present at events such as football matches or concerts
- attribution theory — the theory that tries to explain how people link actions and emotions to particular causes, both internal and external
- audio conferencing — the practice of conducting meetings by the use of audio telecommunications
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- augmented interval — an interval that is a half step greater than the corresponding major or perfect interval
- australian doubles — an unusual formation in doubles in which the server's partner is positioned on the same side of the court as the server.
- australian terrier — a small wire-haired breed of terrier similar to the cairn
- australopithecines — Plural form of australopithecine.
- authorized capital — the total amount of value of the shares that a company is allowed to distribute
- authorized version — the revised English translation of the Bible published in England in 1611 with the authorization of King James I
- autobiographically — In a autobiographical manner.
- autogenic training — a technique for reducing stress through mental exercises to produce physical relaxation
- automatic exposure — the automatic adjustment of the lens aperture and shutter speed of a camera by a control mechanism
- automatic tracking — a radar tracking system in which an automatic device uses the echo signal from the tracked object to keep the radar constantly beamed on target and to compute the range of the object.
- auxiliary equation — characteristic equation (def 1b).
- auxiliary language — a language, as Esperanto, Swahili, or English, used for intercommunication by speakers of various other languages.
- auxiliary-equation — Mathematics. the characteristic polynomial of a given matrix, equated to zero. Also called auxiliary equation. an equation with one variable and equated to zero, which is derived from a given linear differential equation and in which the coefficient and power of the variable in each term correspond to the coefficient and order of a derivative in the original equation.
- aviation authority — a body that is responsible for overseeing the aviation industry
- aviation insurance — Aviation insurance is insurance cover for aircraft, and for damage, injury, or loss of life or cargo while traveling on aircraft.
- avoirdupois weight — a British and American system of weights based on a pound of 16 ounces
- axis of revolution — an axis in a plane, about which an area is revolved to form a solid of revolution.
- background reading — reading of related works in order to get contextual information on a topic that you are intending to study or write about
- bargaining counter — A bargaining counter is the same as a bargaining chip.
- barium thiosulfate — a white, crystalline, water-insoluble, poisonous solid, BaS 2 O 3 ⋅H 2 O, used chiefly in the manufacture of explosives, matches, paints, and varnishes.
- before you know it — rapidly, soon
- behaviour patterns — the characteristic ways in which a person or animal acts
- bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
- berwick-upon-tweed — a town in N England, in N Northumberland at the mouth of the Tweed: much involved in border disputes between England and Scotland between the 12th and 16th centuries; neutral territory 1551–1885. Pop: 12 870 (2001)
- bioinstrumentation — the use of instruments, as sensors, to detect and measure certain body functions, as of persons in spaceflight, and transmit the data to a point where it is evaluated
- bird's-nest fungus — any fungus of the family Nidulariaceae, having a nestlike spore-producing body containing egglike spore-filled structures
- blissful ignorance — unawareness or inexperience of something unpleasant
- board of education — a group or agency with responsibility for education
- boulogne-sur-seine — an industrial suburb of SW Paris. Pop: 106 367 (1999)
- boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
- branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
- breach of security — an act that violates a country, area, or building's security measures
- bread and circuses — something offered as a means of distracting attention from a problem or grievance
- break your silence — If someone breaks their silence about something, they talk about something that they have not talked about before or for a long time.
- bring someone luck — If you say that something brings bad luck or brings someone good luck, you believe that it has an influence on whether good or bad things happen to them.
- bring-and-buy sale — A bring-and-buy sale is an informal sale to raise money for a charity or other organization. People who come to the sale bring things to be sold and buy things that other people have brought.
- briquet's syndrome — somatization disorder.
- broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
- bubble-jet printer — an ink-jet printer that heats the ink before printing
- building materials — materials such as bricks, cement, timber, etc
- burkitt's lymphoma — a cancer characterized by tumors containing lymphoid cells, occurring esp. in children, in the jaw, eyes, and internal organs: it is associated with the Epstein-Barr virus
- burn one's bridges — If you burn your bridges, you do something which forces you to continue with a particular course of action, and makes it impossible for you to return to an earlier situation or relationship.
- burn one's fingers — to suffer from having meddled or been rash
- burrell collection — a gallery in Glasgow, noted for its collection of paintings, textiles, furniture, ceramics, etc
- bursa of fabricius — a lymphoid gland of the cloaca in birds, believed to function in disease resistance, and closing or disappearing as the bird ages.
- butler's sideboard — a sideboard, often with a fall front, having on its top a china cabinet with glazed doors.