18-letter words containing u, r, t
- athletic supporter — jockstrap
- 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
- 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-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.
- bachelor's-buttons — any of various plants of the daisy family with button-like flower heads
- back to square one — If you are back to square one, you have to start dealing with something from the beginning again because the way you were dealing with it has failed.
- barbershop quartet — a group of four singers who perform a style of music sung in four-part harmony
- 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.
- battle of omdurman — a battle (1898) in which the Mahdi's successor and his Ansar followers were defeated by Lord Kitchener's British forces
- battleground-state — a state of the U.S. in which the Democratic and Republican candidates both have a good chance of winning and that is considered key to the outcome of a presidential election: the swing states of Ohio and Indiana.
- beefsteak mushroom — an edible bracket fungus, Fistulina hepatica, that grows on trees and can rot the heartwood of living oaks and chestnuts.
- 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)
- best-ball foursome — a match, scored by holes, between two pairs of players, in which the score of the lower scoring member of each pair is taken as their score for the hole.
- 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
- board of education — a group or agency with responsibility for education
- bolt from the blue — If a piece of news comes like a bolt from the blue, it is completely unexpected and very surprising.
- born to the purple — being of royal or high birth
- boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
- bounty-fed farmers — farmers who benefit from subsidies
- bourdon-tube gauge — an instrument for measuring the pressure of gases or liquids, consisting of a semicircular or coiled, flexible metal tube attached to a gauge that records the degree to which the tube is straightened by the pressure of the gas or liquid inside.
- branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
- brand-name product — A brand-name product is one which is made by a well-known manufacturer and has the manufacturer's label on it.
- breach of security — an act that violates a country, area, or building's security measures
- briquet's syndrome — somatization disorder.
- broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
- brute force attack — (cryptography) A method of breaking a cipher (that is, to decrypt a specific encrypted text) by trying every possible key. The quicker the brute force attack, the weaker the cipher. Feasibility of brute force attack depends on the key length of the cipher, and on the amount of computational power available to the attacker. Brute force attack is impossible against the ciphers with variable-size key, such as a one-time pad cipher.
- bubble-jet printer — an ink-jet printer that heats the ink before printing
- building materials — materials such as bricks, cement, timber, etc
- bullnose stretcher — bull stretcher (def 1).