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19-letter words containing r, e, s, o

  • 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).
  • 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.
  • psychoendocrinology — the study of the relationship between the endocrine system and various symptoms or types of mental illness.
  • 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)
  • pull in one's horns — one of the bony, permanent, hollow paired growths, often curved and pointed, that project from the upper part of the head of certain ungulate mammals, as cattle, sheep, goats, or antelopes.
  • put a figure on sth — When you put a figure on an amount, you say exactly how much it is.
  • put one's finger on — any of the terminal members of the hand, especially one other than the thumb.
  • 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.
  • pythagoras' theorem — (spelling)   It's Pythagoras's Theorem.
  • quantum electronics — the application of quantum mechanics and quantum optics to the study and design of electronic devices
  • 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.
  • queen's regulations — (in Britain and certain other Commonwealth countries when the sovereign is female) the code of conduct for members of the armed forces
  • radius of curvature — the absolute value of the reciprocal of the curvature at a point on a curve.
  • raise one's hackles — one of the long, slender feathers on the neck or saddle of certain birds, as the domestic rooster, much used in making artificial flies for anglers.
  • rake over the coals — a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Compare anthracite, bituminous coal, lignite.
  • 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
  • reactive depression — depression occurring in response to some situational stress, as loss of one's job.
  • recessional moraine — a moraine marking a temporary halt in the general retreat of a glacier.
  • recording secretary — an officer charged with keeping the minutes of meetings and responsible for the records.
  • red-shouldered hawk — a North American hawk, Buteo lineatus, having rufous shoulders.
  • reflux oesophagitis — inflammation of the gullet caused by regurgitation of stomach acids, producing heartburn: may be associated with a hiatus hernia
  • register allocation — (compiler, algorithm)   The phase of a compiler that determines which values will be placed in registers. Register allocation may be combined with register assignment. This problem can be shown to be isomorphic to graph colouring by relating values to nodes in the graph and registers to colours. Values (nodes) which must be valid simultaneously are linked by edges and cannot be stored in the same register (coloured the same). See also register dancing and register spilling.
  • registration number — number on vehicle licence plate
  • regression analysis — Statistics. a procedure for determining a relationship between a dependent variable, as predicted success in college, and an independent variable, as a score on a scholastic aptitude test, for a given population. The relationship is expressed as an equation for a line (regres·sion·line) or curve (regres·sion·curve) in which any coefficient (regression coefficient) of the independent variable in the equation has been determined from a sample population.
  • regular icosahedron — an icosahedron in which each of the faces is an equilateral triangle
  • reindustrialization — the revitalization of an industry or industrial society through government aid and tax incentives, modernization of factories and machinery, etc.
  • 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.
  • relational database — an electronic database comprising multiple files of related information, usually stored in tables of rows (records) and columns (fields), and allowing a link to be established between separate files that have a matching field, as a column of invoice numbers, so that the two files can be queried simultaneously by the user.
  • religious education — religion as school subject
  • relocation expenses — Relocation expenses are a sum of money that a company pays to someone who moves to a new area in order to work for the company. The money is to help them pay for moving house.
  • removable hard disk — (storage)   A type of magnetic disk, or possibly magneto-optical disk which is not permanently attached to the disk drive (not a fixed disk) but which can be taken out and replaced, allowing many disks to be used in the same drive. The term "removable disk" would seem to be applicable to floppy disks but is generally reserved for hard disks in suitable cartridges such as those made by Syquest, Iomega and others. Removable disk packs were common on minicomputers such as the PDP-11 in use in the 1970s except that the drives were the size of washing machines and the disk packs as big as car wheels. Removable disks became popular on microcomputers in the 1990s as a cheap way of expanding disk space, transporting large amounts of data between computers and storing backups. Large, cheap fixed hard disks and USB memory sticks have made removable disks less attractive.
  • repeat prescription — A repeat prescription is a prescription for a medicine that you have taken before or that you use regularly.
  • representationalism — Also called representative realism. Epistemology. the view that the objects of perception are ideas or sense data that represent external objects, especially the Lockean doctrine that the perceived idea represents exactly the primary qualities of the external object.
  • republic of letters — the collective body of literary people.
  • research fellowship — the position or office of someone who conducts academic research into a subject at a university, etc
  • research laboratory — place for scientific experimentation
  • reserved occupation — in time of war, an occupation from which one will not be called up for military service
  • resign oneself (to) — to submit or become reconciled (to); accept (something) passively
  • resistance movement — a movement fighting (for freedom, etc), often secretly or illegally, against an invader in an occupied country or against the country's government, etc
  • resonance radiation — radiation emitted by an atom or molecule, having the same frequency as that of an incident particle, as a photon, and usually involving a transition to the lowest energy level of the atom or molecule.
  • resonant-jet engine — resojet engine.
  • resorcinolphthalein — fluorescein.
  • respiratory failure — a condition in which the respiratory system is unable to provide an adequate supply of oxygen or to remove carbon dioxide efficiently
  • respiratory pigment — any of several colored protein substances, as hemoglobin and hemocyanin, in the circulatory system of animals and some plants, that combine reversibly with oxygen that is carried to the tissues
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