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20-letter words containing p, r

  • centrifugal spinning — the spinning of rayon filaments in a centrifugal box.
  • change-speed gearbox — A change-speed gearbox is a set of movable or constant gears which allows the speed ratio between input and output shafts to be changed either manually or automatically.
  • chapter of accidents — a series of misfortunes
  • character repertoire — (character)   The set of all characters onto which a coded character set maps integers (code positions). For example, consider these two simple coded character sets: Coded Character Set One: integer 0 -> the character "A" integer 1 -> the character "B" Coded Character Set Two: integer 0 -> the character "B" integer 1 -> the character "A" Both of these coded character sets map to the characters "A" and "B", so they have the same character repertoire. But since the mapping is different (and obviously incompatible), these are different coded character sets.
  • checkerboard pattern — checked pattern that looks like a draughtboard
  • chemical fingerprint — a distinctive characteristic or pattern indicating the presence of a certain molecule, used to identify a chemical.
  • chemolithoautotrophs — Plural form of chemolithoautotroph.
  • chemotherapeutically — By means of chemotherapy.
  • chief superintendent — an officer of senior rank in a British police force or other similarly organized force
  • child support agency — the British government agency concerned with the welfare of children
  • christopher columbus — Christopher (Sp. Cristóbal Colón; It. Cristoforo Colombo) 1446?–1506, Italian navigator in Spanish service: traditionally considered the discoverer of America 1492.
  • christopher strachey — (person)   Professor of Computation at Oxford, England, born 1916, died May 1975. He invented the term "currying". See also: General Purpose Macro-generator.
  • chromatic adaptation — the alteration by photosynthesizing organisms of the proportions of their photosynthetic pigments in response to the intensity and colour of the available light, as shown by algae in the littoral zone, which change from green to red as the zone is descended
  • clay-colored sparrow — a sparrow, Spizella pallida, of the interior of North America, having buff, brown, and white plumage with a pale-gray breast.
  • cleansing department — the department of a local authority that collects refuse
  • co-operative society — In Britain, a co-operative society is a commercial organization with several shops in a particular district. Customers can join this organization and get a share of its profits.
  • cold-weather payment — (in Britain) a payment made by the government to people on low incomes when the temperature falls below a certain level for a specific number of days
  • collective ownership — ownership by a group for the benefit of members of that group
  • colonial experiencer — affluent young Englishman who gained experience of farming, etc in colonial Australia
  • colorado blue spruce — blue spruce.
  • colorpoint shorthair — any of a breed of domestic cat, bred by crossing a Siamese and an American shorthair, with blue, almond-shaped eyes and a short, glossy, white coat shading to a darker color at the face, ears, feet, and tail
  • colour look-up table — colour palette
  • comparative judgment — any judgment about whether there is a difference between two or more stimuli
  • comparative religion — a field of study seeking to derive general principles from a comparison and classification of the growth and influence of various religions.
  • compare and contrast — note similarities, differences
  • compartmentalisation — Alternative form of compartmentalization.
  • compartmentalization — to divide into categories or compartments.
  • compensation culture — a culture in which people are very ready to go to law over even relatively minor incidents in the hope of gaining compensation
  • compensatory damages — sum paid for a loss
  • complaints procedure — a prescribed method of lodging a complaint to an institution
  • complementary angles — either of two angles that added together produce an angle of 90°.
  • complementary colors — any of two colors of the spectrum that, combined in the right intensities, produce white or nearly white light
  • complementary colour — one of any pair of colours, such as yellow and blue, that give white or grey when mixed in the correct proportions
  • complementary strand — either of the two chains that make up a double helix of DNA, with corresponding positions on the two chains being composed of a pair of complementary bases.
  • complex carbohydrate — a carbohydrate, as sucrose or starch, that consists of two or more monosaccharide units.
  • composite photograph — a photograph formed by superimposing two or more separate photographs
  • comprehensive school — a secondary school for children of all abilities from the same district
  • compression ignition — ignition of engine fuel by the heat of air compressed in the cylinders into which the fuel is introduced.
  • computability theory — (mathematics)   The area of theoretical computer science concerning what problems can be solved by any computer. A function is computable if an algorithm can be implemented which will give the correct output for any valid input. Since computer programs are countable but real numbers are not, it follows that there must exist real numbers that cannot be calculated by any program. Unfortunately, by definition, there isn't an easy way of describing any of them! In fact, there are many tasks (not just calculating real numbers) that computers cannot perform. The most well-known is the halting problem, the busy beaver problem is less famous but just as fascinating.
  • computer programming — the activity or profession of writing computer programs
  • computer typesetting — a system for the high-speed composition of type by a device driven by punched paper tape or magnetic tape that has been processed by a computer
  • computing dictionary — Free On-line Dictionary of Computing
  • conditioned response — a response that is transferred from the second to the first of a pair of stimuli. A well-known Pavlovian example is salivation by a dog when it hears a bell ring, because food has always been presented when the bell has been rung previously
  • conferencing over ip — (communications, standard)   (CoIP) Standards for the transmission of multimedia over the Internet. CoIP extends VoIP (voice over Internet Protocol) with text, images, video. The main CoIP standard is based on H.323. The VoIP forum of the IMTC merged with the H.323 Activity Group in January 1999 to form the Conferencing over IP (CoIP) Activity Group. VoIP uses "VoIP Devices" as gateways to route voice data packets over the Internet or PSTN. Protocols such as SGCP and its successor MGCP extend VoIP to handle media other than voice data.
  • conformal projection — a map projection in which angles formed by lines are preserved: a map made using this projection preserves the shape of any small area.
  • connector conspiracy — (business, standard)   The tendency of manufacturers (or, by extension, other designers) to come up with products that don't fit with the old stuff, thereby making you buy either all new stuff or expensive interface devices. The term probably came into prominence with the appearance of the DEC KL-10, none of whose connectors matched anything else. The KL-10 Massbus connector was actually *patented* by DEC, who reputedly refused to licence the design, thus effectively locking out competition for the lucrative Massbus peripherals market. This policy was a source of frustration for the owners of dying, obsolescent disk and tape drives. A related phenomenon is the invention of new screw heads so that only Designated Persons, possessing the magic screwdrivers, can remove covers and make repairs or install options. Older Apple Macintoshes took this one step further, requiring not only a hex wrench but a specialised case-cracking tool to open the box. With the advent of more open-systems computing this term has fallen somewhat into disuse. Compare backward combatability.
  • conservative baptist — a member of a Protestant denomination (Conservative Baptist Association of America) organized in Milwaukee, Wisconsin, in 1948.
  • construction company — a business enterprise concerned with the construction of buildings, bridges, etc
  • consumer price index — The consumer price index is an official measure of the rate of inflation within a country's economy. The abbreviation CPI is also used.
  • contact metamorphism — localized metamorphism resulting from the heat of an igneous intrusion.
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