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16-letter words containing a, r, c, t

  • project guardian — (project, security)   A project which grew out of the ARPA support for Multics and the sale of Multics systems to the US Air Force. The USAF wanted a system that could be used to handle more than one security classification of data at a time. They contracted with Honeywell and MITRE Corporation to figure out how to do this. Project Guardian led to the creation of the Access Isolation Mechanism, the forerunner of the B2 labeling and star property support in Multics. The DoD Orange Book was influenced by the experience in building secure systems gained in Project Guardian.
  • project planning — project management
  • projection paper — sensitized paper for recording a projected image.
  • projective plane — (mathematics)   The space of equivalence classes of vectors under non-zero scalar multiplication. Elements are sets of the form {kv: k != 0, k scalar, v != O, v a vector} where O is the origin. v is a representative member of this equivalence class. The projective plane of a vector space is the collection of its 1-dimensional subspaces. The properties of the vector space induce a topology and notions of smoothness on the projective plane. A projective plane is in no meaningful sense a plane and would therefore be (but isn't) better described as a "projective space".
  • prolonged-action — sustained-release.
  • promotional code — A promotional code is a code offered by retailers to customers who can use it to receive a discounted price when buying products online.
  • proper adjective — an adjective formed from a proper noun, as American from America.
  • property company — a business that makes money by buying, selling, and renting out land and houses
  • prophylactically — defending or protecting from disease or infection, as a drug.
  • propylthiouracil — a white crystalline compound, C 7 H 1 0 N 2 OS, that interferes with the synthesis of thyroid hormone by the thyroid gland: used in the treatment of hyperthyroidism.
  • prosecution case — the case brought against someone by a legal authority
  • protection ratio — the minimum acceptable ratio between the amplitudes of a wanted radio or television broadcast signal and any interfering signal
  • protestant ethic — work ethic.
  • proxima centauri — the nearest star to the sun at a distance of 4.3 light-years, part of the Alpha Centauri triple-star system located in the constellation Centaurus.
  • proxime accessit — the person coming next after the winner in a competitive examination or an academic prize giving; runner-up
  • pseudo-patriotic — of, like, suitable for, or characteristic of a patriot.
  • pseudo-realistic — interested in, concerned with, or based on what is real or practical: a realistic estimate of costs; a realistic planner.
  • pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
  • psychogeriatrics — the psychology of old age.
  • public relations — (used with a plural verb) the actions of a corporation, store, government, individual, etc., in promoting goodwill between itself and the public, the community, employees, customers, etc.
  • public transport — fare-paying travel
  • punctuation mark — any of a group of conventional marks or characters used in punctuation, as the period, comma, semicolon, question mark, or dash.
  • purchase request — A purchase request is a document detailing required items, the number required and when they will be required. Once approved it becomes a purchase order.
  • purchasing agent — a person who buys materials, supplies, equipment, etc., for a company.
  • pure watercolour — water-soluble pigment, applied in transparent washes and without the admixture of white pigment in the lighter tones
  • quadricentennial — of, relating to, or marking the completion of a period of four hundred years.
  • quantum computer — a computer that makes use of the quantum states of electrons or other particles to store and process information as quantum bits.
  • quasi-democratic — pertaining to or of the nature of democracy or a democracy.
  • quasi-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
  • quatercentennial — pertaining to or marking a period of 400 years.
  • racing certainty — a horse considered very likely or certain to win a race
  • radiant exitance — the ability of a surface to emit radiation expressed as the radiant flux emitted per unit area at a specified point on the surface
  • radio-controlled — A radio-controlled device works by receiving radio signals which operate it.
  • radiosymmetrical — radially symmetrical.
  • radius of action — the maximum distance that a ship, aircraft, or land vehicle can travel from its base and return without refuelling
  • rambunctiousness — difficult to control or handle; wildly boisterous: a rambunctious child.
  • rape of the lock — a mock-epic poem (1712) by Alexander Pope.
  • rate of exchange — exchange rate.
  • rating community — an online community based around a website that allows members to rate each other's photographs, qualifications, etc, as well as those of applicants, and which only those approved by existing members are allowed to join
  • rattle so's cage — If someone rattles your cage, they do something which is intended to make you feel nervous.
  • re-accreditation — to ascribe or attribute to (usually followed by with): He was accredited with having said it.
  • re-chromatograph — to separate and analyse (a mixture of liquids or gases) by means of chromatography a second or further time
  • reaction chamber — the chamber in a rocket engine in which the reaction or combustion of fuel occurs
  • reaction turbine — a turbine driven by the reactive force of a fluid passing through the rotor blades.
  • real-time euclid — Real-time language, restriction to time-bounded constructs. ["Real-Time Euclid: A Language for Reliable Real-Time Systems", E. Kligerman et al, IEEE Trans Software Eng SE-12(9):941-1986-09-949].
  • real-time pascal — (language)   A later name for Pascal-80 by RC International, Denmark.
  • rearguard action — an action fought by a rearguard
  • recapitalization — a revision of a corporation's capital structure by an exchange of securities.
  • reclassification — categorization in a different way
  • reconceptualized — to form into a concept; make a concept of.
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