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18-letter words containing s, o, a, r, i

  • astronomical clock — a complex clock showing astronomical phenomena, such as the phases of the moon
  • asymptotic freedom — a property of the force between quarks, according to quantum chromodynamics, such that they behave almost like free particles when they are close together within a hadron.
  • asynchronous logic — (architecture)   A data-driven circuit design technique where, instead of the components sharing a common clock and exchanging data on clock edges, data is passed on as soon as it is available. This removes the need to distribute a common clock signal throughout the circuit with acceptable clock skew. It also helps to reduce power dissipation in CMOS circuits because gates only switch when they are doing useful work rather than on every clock edge. There are many kinds of asynchronous logic. Data signals may use either "dual rail encoding" or "data bundling". Each dual rail encoded Boolean is implemented as two wires. This allows the value and the timing information to be communicated for each data bit. Bundled data has one wire for each data bit and another for timing. Level sensitive circuits typically represent a logic one by a high voltage and a logic zero by a low voltage whereas transition signalling uses a change in the signal level to convey information. A speed independent design is tolerant to variations in gate speeds but not to propagation delays in wires; a delay insensitive circuit is tolerant to variations in wire delays as well. The purest form of circuit is delay-insensitive and uses dual-rail encoding with transition signalling. A transition on one wire indicates the arrival of a zero, a transition on the other the arrival of a one. The levels on the wires are of no significance. Such an approach enables the design of fully delay-insensitive circuits and automatic layout as the delays introduced by the layout compiler can't affect the functionality (only the performance). Level sensitive designs can use simpler, stateless logic gates but require a "return to zero" phase in each transition.
  • at the risk of sth — If you do something at the risk of something unpleasant happening, you do it even though you know that the unpleasant thing might happen as a result.
  • at your fingertips — If you say that something is at your fingertips, you approve of the fact that you can reach it easily or that it is easily available to you.
  • at/from a distance — If you are at a distance from something, or if you see it or remember it from a distance, you are a long way away from it in space or time.
  • athletic supporter — jockstrap
  • atmospheric engine — an early form of single-acting engine in which the power stroke is provided by atmospheric pressure acting upon a piston in an exhausted cylinder.
  • atmospheric window — wavelengths of the electromagnetic spectrum that can be transmitted through the earth's atmosphere. Atmospheric windows occur in the visible, infrared, and radio regions of the spectrum
  • auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
  • 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.
  • australopithecines — Plural form of australopithecine.
  • authorized version — the revised English translation of the Bible published in England in 1611 with the authorization of King James I
  • automatic exposure — the automatic adjustment of the lens aperture and shutter speed of a camera by a control mechanism
  • 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.
  • ballistocardiogram — a tracing made by a ballistocardiograph
  • baritone saxophone — the second lowest instrument in the family of saxophones
  • 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.
  • bartholin's glands — two small reddish-yellow glands, one on each side of the vaginal orifice, that secrete a mucous lubricating substance during sexual stimulation in females
  • behavioral science — any of several studies, as sociology, psychology, anthropology, etc., that examine human activities in an attempt to discover recurrent patterns and to formulate rules about social behavior
  • behaviour patterns — the characteristic ways in which a person or animal acts
  • benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
  • bichromate process — any of several methods of photography in which the light-sensitive medium is alkaline bichromate associated with a colloid such as gum, albumen, or gelatin.
  • biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
  • 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
  • biological parents — the biological mother and father of a child
  • bipolar transistor — (electronics)   A transistor made from a sandwich of n- and p-type semiconductor material: either npn or pnp. The middle section is known as the "base" and the other two as the "collector" and "emitter". When used as an amplifying element, the base to emitter junction is in a "forward-biased" (conducting) condition, and the base to collector junction is "reverse-biased" or non-conducting. Small changes in the base to emitter current (the input signal) cause either holes (for pnp devices) or free electrons (for npn) to enter the base from the emitter. The attracting voltage of the collector causes the majority of these charges to cross into and be collected by the collector, resulting in amplification. Contrast field effect transistor.
  • birds of a feather — If you refer to two people as birds of a feather, you mean that they have the same interests or are very similar.
  • biz-core stability — (security)   Internet security products which secure the business core.
  • blissful ignorance — unawareness or inexperience of something unpleasant
  • board of directors — A company's board of directors is the group of people elected by its shareholders to manage the company.
  • board of elections — a bipartisan board appointed usually by local authorities and charged with control of elections and voting procedure.
  • board of examiners — a group of people who officially administer examinations
  • borosilicate glass — any of a range of heat- and chemical-resistant glasses, such as Pyrex, prepared by fusing together boron(III) oxide, silicon dioxide, and, usually, a metal oxide
  • bosnia-herzegovina — a country in SE Europe; a constituent republic of Yugoslavia until 1991; in a state of civil war (1992–95); Serbian and Croatian forces were also involved: mostly barren and mountainous, with forests in the east. Languages: Bosnian, Croatian, and Serbian (formerly all regarded together as Serbo-Croat). Religion: Muslim, Serbian Orthodox, and Roman Catholic. Currency: marka (pegged to the euro). Capital: Sarajevo. Pop: 3 875 723 (2013 est). Area: 51 129 sq km (19 737 sq miles)
  • branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
  • branch to fishkill — (IBM: from the location of one of the corporation's facilities) Any unexpected jump in a program that produces catastrophic or just plain weird results. See jump off into never-never land, hyperspace.
  • brazilian rosewood — a Brazilian tree, Dalbergia nigra, of the legume family.
  • breach of security — an act that violates a country, area, or building's security measures
  • 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.
  • british somaliland — a former British protectorate (1884–1960) in E Africa, on the Gulf of Aden: united with Italian Somaliland in 1960 to form Somalia (or the Somali Republic); in 1991 the self-styled republic of Somaliland, covering the same area as the former British Somaliland, declared itself independent and continues to function largely as a separate entity, though without international recognition
  • broadcasting house — any of a number of buildings in the UK from which the BBC broadcasts or has broadcast
  • bronchocandidiasis — See under candidiasis.
  • 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
  • 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.
  • cabernet sauvignon — a black grape originally grown in the Bordeaux area of France, and now throughout the wine-producing world
  • california fuchsia — a North American onagraceous plant, Zauschneria californica, with tubular scarlet flowers
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