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19-letter words containing c, o, t, u

  • radius of curvature — the absolute value of the reciprocal of the curvature at a point on a curve.
  • rap on the knuckles — a mild reprimand or light sentence
  • reactor temperature — The reactor temperature is the temperature at various stages in a reactor in an FCC unit.
  • reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
  • reconceptualization — to form into a concept; make a concept of.
  • recording equipment — devices used for sound reproduction
  • recurrence relation — (mathematics)   An equation that defines each element of a sequence in terms of one or more earlier elements. E.g. The Fibonacci sequence, X[1] = 1 X[2] = 1 X[n] = X[n-1] + X[n-2] Some recurrence relations can be converted to "closed form" where X[n] is defined purely in terms of n, without reference to earlier elements.
  • reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
  • relational calculus — (database)   An operational methodolgy, founded on predicate calculus, dealing with descripitive expressions that are equivalent to the operations of relational algebra. Codd's reduction algorithm can convert from relational calculus to relational algebra. Two forms of the relational calculus exist: the tuple calculus and the domain calculus.
  • religious education — religion as school subject
  • republic of letters — the collective body of literary people.
  • republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
  • reserved occupation — in time of war, an occupation from which one will not be called up for military service
  • restorative justice — a theory and method in criminal justice in which it is arranged that the victim and the community receive restitution from the offender.
  • reticular formation — a network of neurons in the brainstem involved in consciousness, regulation of breathing, the transmission of sensory stimuli to higher brain centers, and the constantly shifting muscular activity that supports the body against gravity.
  • reticuloendothelial — pertaining to, resembling, or involving cells of the reticuloendothelial system.
  • rhetorical question — a question asked solely to produce an effect or to make an assertion and not to elicit a reply, as “What is so rare as a day in June?”.
  • right circular cone — a cone whose surface is generated by lines joining a fixed point to the points of a circle, the fixed point lying on a perpendicular through the center of the circle.
  • rocky mountain goat — a long-haired, white, antelopelike wild goat, Oreamnos americanus, of mountainous regions of western North America, having short, black horns.
  • run-length encoding — A kind of compression algorithm which replaces sequences ("runs") of consecutive repeated characters (or other units of data) with a single character and the length of the run. This can either be applied to all input characters, including runs of length one, or a special character can be used to introduce a run-length encoded group. The longer and more frequent the runs are, the greater the compression that will be achieved. This technique is particularly useful for encoding black and white images where the data units would be single bit pixels.
  • sacramento sturgeon — white sturgeon.
  • san juan capistrano — a city in SW California: site of old Spanish mission; known for annual return of swallows, said to occur on March 19.
  • saturation coverage — news coverage (of an event, etc) that is very thorough in order not to miss any details
  • scattersite housing — public housing, especially for low-income families, built throughout an urban area rather than being concentrated in a single neighborhood.
  • school of the squad — an institution where instruction is given, especially to persons under college age: The children are at school.
  • screen actors guild — a labor union for motion-picture performers, founded in 1933. Abbreviation: SAG.
  • secondary education — education at high-school level
  • secondary qualities — one of the qualities attributed by the mind to an object perceived, such as color, temperature, or taste.
  • secondary structure — the arrangement of a polypeptide into a regular alpha helix, beta structure, or random coil configuration by the formation of intramolecular hydrogen bonds along the length of the chain.
  • seleucia tracheotis — an ancient city in SE Asia Minor, on the River Calycadnus (modern Goksu Nehri): captured by the Turks in the 13th century; site of present-day Silifke (Turkey)
  • self-congratulating — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
  • self-congratulation — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
  • self-congratulatory — the expression or feeling of uncritical satisfaction with oneself or one's own accomplishment, good fortune, etc.; complacency.
  • self-reconstruction — an act of reconstructing.
  • semibituminous coal — a coal intermediate between bituminous and anthracite coal in hardness, yielding the maximum heat of any ordinary steam coal.
  • semiconductor laser — a laser in which a semiconductor is the light-emitting source, used in many medical procedures.
  • senatorial courtesy — the practice in the U.S. Senate of confirming only those presidential appointees approved by both senators from the state of the appointee, or by the senior senator of the president's party.
  • sensitometric curve — characteristic curve.
  • sentential function — an expression that contains one or more variables and becomes meaningful when suitable constant terms are substituted for them.
  • sexual inter-course — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.
  • sexual reproduction — reproduction involving the union of gametes.
  • slate-colored junco — the eastern subspecies of the dark-eyed junco, Junco hyemalis, having grayer plumage than the several western subspecies.
  • smokestack industry — A smokestack industry is a traditional industry such as heavy engineering or manufacturing, rather than a modern industry such as electronics.
  • social security act — a law passed in 1935 providing old-age retirement insurance, a federal-state program of unemployment compensation, and federal grants for state welfare programs.
  • sodium hypochlorite — a pale-green, crystalline compound, NaOCl, unstable in air, soluble in cold water, decomposes in hot water: used as a bleaching agent for paper and textiles, in water purification, in household use, and as a fungicide.
  • sodium metasilicate — a white, granular sodium silicate, Na 2 SiO 3 , soluble in water: used in detergents and in bleaching and cleaning products.
  • sound effects woman — a woman who produces sounds artificially or reproduces them from a recording, etc, to create a theatrical effect, such as the bringing together of two halves of a hollow coconut shell to simulate a horse's gallop. Such sound effects are used in plays, films, etc
  • south african dutch — the Boers.
  • south pacific ocean — the part of the Pacific Ocean extending S from the Equator to the Antarctic continent.
  • south san francisco — a city in central California.
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