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19-letter words containing a, p, o

  • programmer's switch — (hardware)   A button on the front of some Apple Macintosh computers which, when pressed, causes a command line prompt to appear. This gives access to the built-in mini-debugger, which has commands to dump memory, return to the application that was broken out, and others. A more sophisticated debugger must be installed in order to inspect breakpoints, etc.
  • progressive judaism — Reform Judaism.
  • property speculator — a person who takes part in property speculation
  • propositional logic — (logic)   (or "propositional calculus") A system of symbolic logic using symbols to stand for whole propositions and logical connectives. Propositional logic only considers whether a proposition is true or false. In contrast to predicate logic, it does not consider the internal structure of propositions.
  • protease inhibitors — a drug that inhibits the action of protease, especially any of a class of antiviral drugs that prevent the cleavage and replication of HIV proteins.
  • proto-indo-european — the unattested prehistoric parent language of the Indo-European languages; Indo-European.
  • proton-proton chain — a series of thermonuclear reactions, responsible for the energy production in stars like the sun, in which the nuclei of hydrogen atoms are transformed into helium nuclei by sequential addition of single hydrogen nuclei.
  • provably unsolvable — The set or property of problems for which no algorithm at all exists. E.g. the Halting Problem. See also provably difficult.
  • pseudo-aristocratic — of or relating to government by an aristocracy.
  • pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
  • pseudo-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
  • pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
  • pseudo-intellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
  • pseudo-intransitive — denoting an occurrence of a normally transitive verb in which a direct object is not explicitly stated or forms the subject of the sentence, as in Margaret is cooking or these apples cook well
  • pseudo-professional — following an occupation as a means of livelihood or for gain: a professional builder.
  • pseudohermaphrodite — an individual having internal reproductive organs of one sex and external sexual characteristics resembling those of the other sex or being ambiguous in nature. Compare hermaphrodite (def 1).
  • pseudopsychological — of or relating to psychology.
  • pseudorandom number — (programming)   One of a sequence of numbers generated by some algorithm so as to have an even distribution over some range of values and minimal correlation between successive values. Pseudorandom numbers are used in simulation and encryption. They are pseudorandom not random because the sequence eventually repeats exactly and is entirely determined by the initial conditions. One of the simplest algorithms is x[i+1] = (a * x[i] + c) mod m but this repeats after at most m numbers and successive numbers are closely related. Better algorithms generally use more previous numbers to calculate the next number.
  • psychological novel — a novel that focuses on the complex mental and emotional lives of its characters and explores the various levels of mental activity.
  • psychophysiological — of or relating to psychophysiology.
  • psychotechnological — of or relating to psychotechnology
  • psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
  • puerperal psychosis — a mental disorder sometimes occurring in women after childbirth, characterized by deep depression, delusions of the child's death, and homicidal feelings towards the child
  • pugwash conferences — international peace conferences of scientists held regularly to discuss world problems: Nobel peace prize 1995 awarded to Joseph Rotblat (1908–2005) , one of the founders of the conferences, secretary-general (1957–73), and president (1988–97)
  • punch and judy show — A Punch and Judy show is a puppet show for children, often performed at fairs or at the seaside. Punch and Judy, the two main characters, are always fighting.
  • punch-and-judy show — a puppet show having a conventional plot consisting chiefly of slapstick humor and the tragicomic misadventures of the grotesque, hook-nosed, humpback buffoon Punch and his wife Judy.
  • put a figure on sth — When you put a figure on an amount, you say exactly how much it is.
  • put on the feed bag — Also called nose bag. a bag for feeding horses, placed before the mouth and fastened around the head with straps.
  • put one's back into — to devote all one's strength to (a task)
  • put one's skates on — ice skate (def 1).
  • put sth into action — If you put an idea or policy into action, you begin to use it or cause it to operate.
  • pyorrhea alveolaris — a chronic periodontitis of the gums and tooth sockets, characterized by the formation of pus and, usually, by loosening of the teeth
  • pyorrhea-alveolaris — Pathology. a discharge of pus.
  • pyrenees-orientales — a department in S France. 1600 sq. mi. (4145 sq. km). Capital: Perpignan.
  • pyrophosphoric acid — a crystalline, water-soluble powder, H 4 P 2 O 7 , formed by the union of one molecule of phosphorus pentoxide with two molecules of water.
  • pythagoras' theorem — (spelling)   It's Pythagoras's Theorem.
  • pythagorean theorem — Pythagoras's Theorem
  • quartermaster corps — the branch of the U.S. Army responsible for supplying food, clothing, fuel, and equipment and for the operation of commissaries, laundries, etc.
  • quick on the uptake — You say that someone is quick on the uptake when they understand things quickly. You say that someone is slow on the uptake when they have difficulty understanding simple or obvious things.
  • radiation potential — the potential in volts that must be applied to an atom or molecule to cause it to emit radiation at one of its characteristic frequencies.
  • radiochromatography — chromatography in which radiolabeled substances on the chromatogram are determined quantitatively or qualitatively by measuring their radioactivity.
  • radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
  • ralph waldo emerson — Ralph Waldo [wawl-doh,, wol-] /ˈwɔl doʊ,, ˈwɒl-/ (Show IPA), 1803–82, U.S. essayist and poet.
  • rancho palos verdes — a town in SW California.
  • rap on the knuckles — a mild reprimand or light sentence
  • rapture of the deep — nitrogen narcosis.
  • rate of penetration — The rate of penetration is the speed with which a drill bit can break the rock under it.
  • reactive depression — depression occurring in response to some situational stress, as loss of one's job.
  • reactor temperature — The reactor temperature is the temperature at various stages in a reactor in an FCC unit.
  • reciprocal exchange — an unincorporated association formed so that its members can participate in reciprocal insurance.
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