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20-letter words containing t, r, i, c

  • recreational vehicle — a van or utility vehicle used for recreational purposes, as camping, and often equipped with living facilities. Abbreviation: RV.
  • recuperative furnace — a furnace having its incoming air heated by exhaust gases, the passage of air and gases through the furnace being always in the same direction.
  • recursive definition — a definition consisting of a set of rules such that by repeated application of the rules the meaning of the definiendum is uniquely determined in terms of ideas that are already familiar.
  • recursive subroutine — a subroutine that can call itself as part of its execution
  • 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.
  • reflecting telescope — an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. Compare radio telescope.
  • refracting telescope — an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. Compare radio telescope.
  • regenerative cooling — Physics. a method of cooling a gas, utilizing the rapid expansion of a compressed portion of the gas, before it becomes liquid, to cool the remainder.
  • regenerative furnace — a furnace in which the incoming air is heated by regenerators.
  • 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
  • relative conjunction — a conjunction that introduces a relative clause
  • requiescat (in pace) — may he or she rest (in peace)
  • restriction fragment — a length of DNA cut from the strand by a restriction enzyme.
  • restrictive covenant — a covenant with a clause that restricts the action of any party to it, especially an agreement among property owners not to sell to members of particular minority groups.
  • restrictive practice — Restrictive practices are ways in which people involved in an industry, trade, or profession protect their own interests, rather than having a system which is fair to the public, employers, and other workers.
  • retirement community — a group of houses in a suburban area or a town designed primarily for retired persons.
  • ring-necked parakeet — a small brightly coloured long-tailed tropical parrot, Psittacula krameri, often kept as a pet
  • ring-necked pheasant — a gallinaceous Asian bird, Phasianus colchicus, having a white band around its neck, introduced into Great Britain, North America, and the Hawaiian Islands.
  • rise to the occasion — to have the courage, wit, etc, to meet the special demands of a situation
  • 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
  • rotary-wing aircraft — an aircraft, esp a helicopter, that is lifted or propelled by rotating airfoils
  • royal air force list — an official list of all serving commissioned officers of the RAF and reserve officers liable for recall
  • ruby-crowned kinglet — an olive-gray, American kinglet, Regulus calendula, the male of which has an erectile, ruby crest.
  • saint andrew's cross — a low evergreen shrub, Ascyrum hypericoides, native to temperate and subtropical America, having flowers in clusters of three: often cultivated.
  • saint george's cross — the Greek cross as used in the flag of Great Britain.
  • santa cruz operation — (SCO) A supplier of Unix systems for Intel microprocessors. They supply Xenix and Open Desktop. Founded in 1979, SCO became a public company in May, 1993 and trades on the Nasdaq National Market System under the symbol SCOC. SCO maintains its world headquarters in Santa Cruz, California, USA; a European headquarters in Watford, England; a Government Systems Group in Reston, Virginia; and offices in Asia, Australia, Canada, Latin America, and throughout Europe and the United States. In February 1993, SCO acquired IXI Limited of Cambridge, England, the leading supplier of Unix System windowing software.
  • sarcastic fringehead — any fish of the genus Neoclinus, characterized by a row of fleshy processes on the head, as N. blanchardi (sarcastic fringehead) of California coastal waters.
  • satellite chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
  • scatter site housing — public housing, especially for low-income families, built throughout an urban area rather than being concentrated in a single neighborhood.
  • schizoid personality — sb with identity disorder
  • schrodinger equation — the wave equation of nonrelativistic quantum mechanics. Also called Schrödinger wave equation. Compare wave equation (def 2).
  • season ticket holder — a person who has a season ticket
  • second international — an international association formed in 1889 in Paris, uniting socialistic groups or parties of various countries and holding international congresses from time to time: in 1923 it joined with the Vienna International to form the Labor and Socialist International. Compare international (def 6).
  • secure accommodation — an institution where young offenders are kept in custody
  • security association — (networking)   The relationship between two or more entities (typically, a computer, but could be a user on a computer, or software component) which describes how the entities will use security services, such as encryption, to communicate. See RFC 1825.
  • 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
  • separation allowance — an allowance paid to a member of the military when they are forced to be apart from their family due to their military duties
  • sergeant first class — a noncommissioned officer ranking next above a staff sergeant and below a first or master sergeant.
  • serpentine stretcher — an X -stretcher having curved lines.
  • service access point — (networking)   (SAP) The OSI term for the component of a network address which identifies the individual application on a host which is sending or receiving a packet. Different SAPs distinguish between different services or applications on a host, e.g. electronic mail, FTP, HTTP.
  • setting-up exercises — gymnastic exercises for better posture, suppleness, etc
  • sex change operation — a surgical operation designed to change a person's physical sexual characteristics to those of the opposite sex
  • short back and sides — If a man has a short back and sides, his hair is cut very short at the back and sides with slightly thicker, longer hair on the top of the head.
  • silicon tetrahydride — silane (def 1).
  • sinfonia concertante — a type of concerto for two or more solo instruments accompanied by an orchestra
  • 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.
  • social security card — a card that contains details of a person's social security number
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