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16-letter words containing r, a, d, i, c

  • pencil and paper — An archaic information storage and transmission device that works by depositing smears of graphite on bleached wood pulp. More recent developments in paper-based technology include improved "write-once" update devices which use tiny rolling heads similar to mouse balls to deposit coloured pigment. All these devices require an operator skilled at so-called "handwriting" technique. These technologies are ubiquitous outside hackerdom, but nearly forgotten inside it. Most hackers had terrible handwriting to begin with, and years of keyboarding tend to have encouraged it to degrade further. Perhaps for this reason, hackers deprecate pencil-and-paper technology and often resist using it in any but the most trivial contexts.
  • periodic decimal — repeating decimal.
  • periodic tenancy — the letting of a dwelling for a repeated short term, as by the week, month, or quarter, with no end date
  • permanganic acid — an acid, HMnO 4 , known only in solution.
  • perpendicularity — vertical; straight up and down; upright.
  • persulfuric acid — Also called Caro's acid, permonosulfuric acid, peroxymonosulfuric acid, peroxysulfuric acid. a white, crystalline solid, H 2 SO 5 , used as an oxidizing agent for certain organic compounds.
  • pharmacodynamics — the branch of pharmacology dealing with the course of action, effect, and breakdown of drugs within the body.
  • phase difference — the difference between two sinusoidally varying quantities that have the same frequency, measured either as an angle or a time
  • phonocardiograph — an instrument for graphically recording the sound of the heartbeat.
  • phosphorous acid — a colorless, crystalline, water-soluble acid of phosphorus, H 3 PO 3 , from which phosphites are derived.
  • physical address — (memory management)   The address presented to a computer's main memory in a virtual memory system, in contrast to the virtual address which is the address generated by the CPU. A memory management unit translates virtual addresses into physical addresses.
  • picture postcard — postcard (def 1).
  • pierce's disease — a disease of grapes caused by a rickettsialike organism, characterized by dwarfing of vines, mottling of woody tissues, and plant death.
  • pinot chardonnay — Chardonnay.
  • pithecanthropoid — of, relating to, or resembling the former genus Pithecanthropus or one of its members.
  • pocket billiards — pool2 (def 1).
  • polar coordinate — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
  • polyacrylic acid — a polymer of acrylic acid used as a sizing agent in the manufacture of nylon and other synthetic textiles.
  • posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
  • prescription pad — a pad of prescriptions used by doctors, etc
  • price leadership — the setting of the price of a product or service by a dominant firm at a level that competitors can match, in order to avoid a price war
  • primary deviance — the violation of a norm or rule that does not result in the violator's being stigmatized as deviant.
  • primary producer — any green plant or any of various microorganisms that can convert light energy or chemical energy into organic matter.
  • program director — a chief executive responsible for selecting and scheduling programs.
  • 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.
  • 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.
  • 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.
  • puddling-furnace — the act of a person or thing that puddles.
  • pyramidal orchid — a chalk-loving orchid, Anacamptis pyramidalis, bearing a dense cone-shaped spike of purplish-pink flowers with a long curved spur
  • pyroracemic acid — pyruvic acid.
  • pyrovanadic acid — an oxyacid of vanadium, known chiefly in the form of its vanadate salts; Formula: H4V2O7
  • pyruvic aldehyde — a yellow, liquid compound, C 3 H 4 O 2 , containing both an aldehyde and a ketone group, usually obtained in a polymeric form: used chiefly in organic synthesis.
  • quadricentennial — of, relating to, or marking the completion of a period of four hundred years.
  • quasi-democratic — pertaining to or of the nature of democracy or a democracy.
  • 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 microphone — a microphone incorporating a radio transmitter so that the user can move around freely
  • radio-controlled — A radio-controlled device works by receiving radio signals which operate it.
  • radiographically — the production of radiographs.
  • 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
  • ramsden eyepiece — an eyepiece consisting of two plano-convex crown-glass lenses of equal focal length, placed with the convex sides facing each other and with a separation between the lenses of about two-thirds of the focal length of each.
  • re-accreditation — to ascribe or attribute to (usually followed by with): He was accredited with having said it.
  • 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].
  • rearguard action — an action fought by a rearguard
  • reconceptualized — to form into a concept; make a concept of.
  • rectus abdominis — a long flat muscle that extends along the whole length of both sides of the abdomen. It flexes the vertebral column, particularly the lumbar portion; it also tenses the anterior abdominal wall and assists in compressing the abdominal contents
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