17-letter words containing o, u, r, i
- absolute majority — If a political party wins an absolute majority, they obtain more seats or votes than the total number of seats or votes gained by their opponents in an election.
- absorption nebula — a cloud of interstellar gas and dust that absorbs and thus obscures the light from stars behind it, appearing as a dark patch in front of a bright nebula or in an otherwise bright area of sky.
- academie goncourt — Edmond Louis Antoine Huot de [ed-mawn lwee ahn-twan y-oh duh] /ɛdˈmɔ̃ lwi ɑ̃ˈtwan üˈoʊ də/ (Show IPA), 1822–96, and his brother Jules Alfred Huot de [zhyl al-fred] /ʒyl alˈfrɛd/ (Show IPA) 1830–70, French art critics, novelists, and historians: collaborators until the death of Jules.
- accounting period — a period of time for which accounts are drawn up
- achromatic colour — colour, such as white, black, and grey, that is devoid of hue
- acidity regulator — a substance, such as citric acid, added to food to change or maintain its pH value
- acoustoelectronic — denoting a device in which electronic signals are converted into acoustic waves, esp in delay lines, etc
- acromioclavicular — (anatomy) Pertaining to both the acromion and the clavicle.
- act of uniformity — any of the three statutes (1549, 1559, 1662) regulating public worship services in the Anglican Church, especially the act of 1662 requiring the use of the Book of Common Prayer.
- active vocabulary — the total number of words a person uses in his own speech and writing
- acupressure point — any of the specific points on the body where pressure is applied in acupressure
- adjective pronoun — a pronoun used as an adjective, as his in His dinner is ready.
- adventure holiday — a holiday that involves some physically challenging activity such as canoeing, rock climbing, etc
- adventure tourism — tourism involving activities that are physically challenging
- affaire d'honneur — a duel
- agricultural show — a display of agricultural equipment and livestock, often including competitions, entertainment, and a trade fair
- alternating group — the subgroup consisting of all even permutations, of the group of all permutations of a finite set.
- aluminum chloride — a yellow-white, crystalline, water-soluble solid that in its white hydrated form, AlCl 3 ⋅6H 2 O, is used chiefly as a wood preservative and in its yellow-white anhydrous form, AlCl 3 , chiefly as a catalyst.
- american foxhound — one of an American breed of medium-sized dogs having a smooth, glossy coat usually black, tan, and white in color, a square-cut muzzle, hanging ears, and a moderately high-set tail, used for hunting both in packs or individually, tailing the game by scent.
- ammonium chloride — a white soluble crystalline solid used chiefly as an electrolyte in dry batteries and as a mordant and soldering flux. Formula: NH4Cl
- ammonium stearate — a tan, waxlike, water-insoluble solid, C 18 H 39 NO 2 , used chiefly in the manufacture of cosmetics.
- angostura bitters — a bitter aromatic tonic made from gentian and various spices and vegetable colourings, used as a flavouring in alcoholic drinks
- anthraquinone dye — any of the class of dyes derived from anthraquinone, used for dyeing textiles, especially cotton, rayon, and silk.
- antiauthoritarian — Opposed to authority.
- antirevolutionary — opposed to revolution, esp opposed to a particular revolution and the people who are carrying it out
- antivirus program — antivirus software
- aperture priority — an automatic exposure system in which the photographer selects the aperture and the camera then automatically sets the correct shutter speed
- aperture-priority — of or relating to a semiautomatic exposure system in which the photographer presets the aperture and the camera selects the shutter speed.
- appointed actuary — An appointed actuary is an actuary appointed by a life insurance company, whose main role is to carry out a regular valuation of the reserves held to pay future policy benefits.
- aristolochiaceous — belonging to the Aristolochiaceae, the birthwort family of plants.
- armature reaction — a change in the magnetic field of a dynamo caused by the magnetic field induced by the current flowing through the armature.
- aromatic compound — an organic compound that contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor.
- articulated joint — Anatomy. a flexible joint.
- articulated lorry — a lorry made in two separate sections, a tractor and a trailer, connected by a pivoted bar
- articulatory loop — a short-term memory system that enables a person to remember short strings of words by rehearsing them repeatedly in his head
- astronomical unit — a unit of distance used in astronomy equal to the mean distance between the earth and the sun. 1 astronomical unit is equivalent to 1.495 × 1011 metres or about 9.3 × 107 miles
- audio description — a facility provided for visually impaired people in which a film, television programme, or play is described through audio technology
- aurea mediocritas — the golden mean.
- australian ballot — an official ballot listing candidates for election to public office and issues, levies, etc., distributed inside the polling place to be marked by the voter in secret: it originated in Australia and is widely used in the U.S.
- australopithecine — any of various extinct apelike primates of the genus Australopithecus and related genera, remains of which have been discovered in southern and E Africa. Some species are estimated to be over 4.5 million years old
- authoritativeness — having due authority; having the sanction or weight of authority: an authoritative opinion.
- authority control — the establishment and maintainance of consistent forms of terms, as of names, subjects, and titles, to be used as headings in bibliographic records.
- autocorrelational — Of or pertaining to autocorrelation.
- automatic writing — writing performed without apparent intent or conscious control, especially to achieve spontaneity or uncensored expression.
- auxiliary storage — secondary storage.
- aviation industry — a collective term for the companies involved in air transport
- avoirdupois pound — a pound weighing 16 ounces
- barrow-in-furness — an industrial town in NW England, in S Cumbria. Pop: 47 194 (2001)
- bbc microcomputer — A series of 6502-based personal computers launched by Acorn Computers Ltd. in January 1982, for use in the British Broadcasting Corporation's educational programmes on computing. The computers are noted for their reliability (many are still in active service in 1994) and both hardware and software were designed for easy expansion. The 6502-based computers were succeeded in 1987 by the Acorn Archimedes family.
- behaviour therapy — any of various means of treating psychological disorders, such as desensitization, aversion therapy, and instrumental conditioning, that depend on the patient systematically learning new modes of behaviour
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