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20-letter words containing m, o, t, r

  • psychometric testing — the use of psychometric tests, often as a selection method
  • psychomotor epilepsy — temporal-lobe epilepsy.
  • public administrator — an official of a city, county, or state government.
  • pythagoras's theorem — (mathematics)   The theorem of geometry, named after Pythagoras, of Samos, Ionia, stating that, for a right-angled triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. I.e. if the longest side has length A and the other sides have lengths B and C (in any units), A^2 = B^2 + C^2 (2004-02-12)
  • quaker meeting house — a place where Quakers gather for worship
  • quantum cryptography — a method of coding information based on quantum mechanics, which is said to be unbreakable
  • quantum field theory — any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.
  • radio interferometer — any of several different types of instrumentation designed to observe interference patterns of electromagnetic radiation at radio wavelengths: used in the discovery and measurement of radio sources in the atmosphere.
  • real-time processing — data-processing by a computer which receives constantly changing data, such as information relating to air-traffic control, travel booking systems, etc, and processes it sufficiently rapidly to be able to control the source of the data
  • recommended standard — (standard)   (RS) A series of EIA standards including EIA-232.
  • reductio ad absurdum — a reduction to an absurdity; the refutation of a proposition by demonstrating the inevitably absurd conclusion to which it would logically lead.
  • regional development — aid-giving to poorer areas or countries
  • relative atomic mass — the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12
  • request for comments — (standard)   (RFC) One of a series, begun in 1969, of numbered Internet informational documents and standards widely followed by commercial software and freeware in the Internet and Unix communities. Few RFCs are standards but all Internet standards are recorded in RFCs. Perhaps the single most influential RFC has been RFC 822, the Internet electronic mail format standard. The RFCs are unusual in that they are floated by technical experts acting on their own initiative and reviewed by the Internet at large, rather than formally promulgated through an institution such as ANSI. For this reason, they remain known as RFCs even once adopted as standards. The RFC tradition of pragmatic, experience-driven, after-the-fact standard writing done by individuals or small working groups has important advantages over the more formal, committee-driven process typical of ANSI or ISO. Emblematic of some of these advantages is the existence of a flourishing tradition of "joke" RFCs; usually at least one a year is published, usually on April 1st. Well-known joke RFCs have included 527 ("ARPAWOCKY", R. Merryman, UCSD; 22 June 1973), 748 ("Telnet Randomly-Lose Option", Mark R. Crispin; 1 April 1978), and 1149 ("A Standard for the Transmission of IP Datagrams on Avian Carriers", D. Waitzman, BBN STC; 1 April 1990). The first was a Lewis Carroll pastiche; the second a parody of the TCP/IP documentation style, and the third a deadpan skewering of standards-document legalese, describing protocols for transmitting Internet data packets by carrier pigeon. The RFCs are most remarkable for how well they work - they manage to have neither the ambiguities that are usually rife in informal specifications, nor the committee-perpetrated misfeatures that often haunt formal standards, and they define a network that has grown to truly worldwide proportions. See also For Your Information, STD.
  • reservations manager — A reservations manager at a hotel is responsible for the reservations at the hotel.
  • restriction fragment — a length of DNA cut from the strand by a restriction enzyme.
  • retinitis pigmentosa — degeneration of the retina manifested by night blindness and gradual loss of peripheral vision, eventually resulting in tunnel vision or total blindness.
  • retirement community — a group of houses in a suburban area or a town designed primarily for retired persons.
  • return from the dead — (jargon)   To regain access to the net after a long absence. Compare person of no account.
  • return on investment — the amount of profit, before tax and after depreciation, from an investment made, usually expressed as a percentage of the original total cost invested. Abbreviation: ROI.
  • rheumatoid arthritis — a chronic autoimmune disease characterized by inflammation of the joints, frequently accompanied by marked deformities, and ordinarily associated with manifestations of a general, or systemic, affliction.
  • rocky mountain basic — (language)   The BASIC language used by Hewlett Packard on their 680x0-based computers. Rocky Mountain Basic is good for interfaces to IEEE 488 controls and contains many mathematical and matrix functions. It has about 600 commands. Typical applications include automatic test stations.
  • rocky mountain sheep — bighorn.
  • romantic involvement — the condition of being in a romantic or sexual relationship
  • root canal treatment — dental treatment
  • rotations per minute — revolutions per minute
  • royal leamington spa — a city in Warwickshire, central England: health resort.
  • run off at the mouth — Anatomy, Zoology. the opening through which an animal or human takes in food. the cavity containing the structures used in mastication. the structures enclosing or being within this cavity, considered as a whole.
  • run-time environment — (operating system)   A collection of subroutines and environment variables that provide commonly used functions and data for a program while it is running. Compare run-time support.
  • satellite chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
  • secure accommodation — an institution where young offenders are kept in custody
  • semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
  • senior aircraftwoman — a rank in the Royal Air Force comparable to that of a private in the army, though not the lowest rank in the Royal Air Force
  • shear transformation — a map of a coordinate space in which one coordinate is held fixed and the other coordinate or coordinates are shifted.
  • short message system — A short message system is a way of sending short written messages from one mobile phone to another. The abbreviation SMS is also used.
  • single point mooring — monobuoy.
  • small craft advisory — a U.S. National Weather Service advisory of sustained winds, over coastal and inland waters, with speeds of 20–33 knots (23–38 mph, 10–17 m/sec). Regional NWS offices have discretion over the choice of the lower limit.
  • sodium fluoroacetate — a white, amorphous, water-soluble, poisonous powder, C 2 H 2 FO 2 Na, used as a rodenticide.
  • sodium meta-arsenite — sodium arsenite.
  • software methodology — (programming)   The study of how to navigate through each phase of the software process model (determining data, control, or uses hierarchies, partitioning functions, and allocating requirements) and how to represent phase products (structure charts, stimulus-response threads, and state transition diagrams).
  • solitary confinement — the confinement of a prisoner in a cell or other place in which he or she is completely isolated from others.
  • sound motion picture — a motion picture with a soundtrack.
  • south american plate — a major tectonic division of the earth's crust, comprising the continent of South America and several ocean basins and bounded on the north by the Caribbean Plate, on the east by the Mid-Atlantic Ridge, on the west by a submarine trench that borders the western coast of the continent, and on the south by the Antarctic Plate.
  • south temperate zone — the part of the earth's surface between the tropic of Capricorn and the Antarctic Circle.
  • staff sergeant major — a noncommissioned officer equivalent in rank to a command sergeant major but having no command responsibility.
  • standard book number — International Standard Book Number. Abbreviation: SBN.
  • stochastic terrorism — the public demonization of a person or group resulting in the incitement of a violent act, which is statistically probable but whose specifics cannot be predicted: The lone-wolf attack was apparently influenced by the rhetoric of stochastic terrorism.
  • stoichiometric ratio — The stoichiometric ratio is the exact ratio between air and flammable gas or vapor at which complete combustion takes place.
  • stony-iron meteorite — a meteorite of roughly equal proportions of metallic iron and stony matter.
  • structural isomerism — Chemistry. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism) as CH 3 OCH 3 and CH 3 CH 2 OH, or in the arrangement of their atoms in space and therefore in one or more properties. Compare optical isomerism, stereoisomerism.
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