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20-letter words containing c, l, o, t, r

  • perpendicular gothic — the style of Gothic architecture in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
  • pest control officer — a person who gets rid of pests such as rats and mice
  • phenylpropyl acetate — a colorless, water-insoluble liquid, C 1 0 H 1 2 O 2 , used chiefly in perfumery.
  • photoelectric effect — the phenomenon in which the absorption of electromagnetic radiation, as light, of sufficiently high frequency by a surface, usually metallic, induces the emission of electrons from the surface.
  • photogelatin process — collotype (def 1).
  • phthalocyanine green — a pigment used in painting, derived from chlorinated copper phthalocyanine and characterized chiefly by its intense green color and permanence.
  • physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
  • physical meteorology — the branch of meteorology dealing with the study of optical, electrical, acoustical, and thermodynamic phenomena in the atmosphere, including the physics of clouds and precipitation.
  • piezoelectric effect — the property exhibited by some nonconducting crystals of becoming electrically polarized when mechanically strained and of becoming mechanically strained when an electric field is applied.
  • planetary precession — the small component of the precession of the equinoxes contributed by the motion of the ecliptic, the change in orientation of the plane of the earth's orbit being produced by the gravitational attraction of the planets.
  • polyanthus narcissus — a Eurasian amaryllidaceous plant, Narcissus tazetta, having clusters of small yellow or white fragrant flowers
  • polyconic projection — a conic projection in which the parallels are arcs of circles that are not concentric but are equally spaced along the central straight meridian, all other meridians being curves equally spaced along the parallels.
  • polymorphic function — a function in a computer program that can deal with a number of different types of data
  • positive electricity — the electricity present in a body or substance that has a deficiency of electrons, as the electricity developed on glass when rubbed with silk.
  • post office protocol — (messaging, protocol)   (POP) A protocol designed to allow single-user computers to retrieve electronic mail from a POP server via TCP/IP. The default port is 110. The POP server might be a computer with a permanent Internet connection whereas its clients might only connect to it occasionally, e.g. by modem. There are (in 1994) three versions: POP, POP2, and POP3. Later versions are NOT compatible with earlier ones.
  • potential difference — voltage
  • prefecture apostolic — a territory in the early stage of missionary development.
  • prescription glasses — corrective spectacles
  • primary optical area — a point in or toward the upper left-hand corner of a printed page, advertisement, or the like, looked at first in reading. Abbreviation: POA.
  • probability function — the function the values of which are probabilities of the distinct outcomes of a discrete random variable
  • procedural agreement — regulations agreed between the parties to collective bargaining, defining the bargaining units, bargaining scope, procedures for collective bargaining, and the facilities to be provided to trade union representatives
  • property speculation — the buying or selling of property in the hope of deriving capital gains
  • proportional counter — a radiation counter in which the strength of each electric pulse generated per count is proportional to the energy of the particle or photon producing the pulse, alpha particles producing a different electric pulse from beta rays.
  • proportional spacing — a feature of some typewriters and other output devices whereby the space allotted to each character is determined by the width of the character
  • propylphenyl acetate — phenylpropyl acetate.
  • psychiatric hospital — institution treating mental disorders
  • psychomotor epilepsy — temporal-lobe epilepsy.
  • public administrator — an official of a city, county, or state government.
  • quadrantal corrector — either of two soft-iron spheres attached to each side of a binnacle, intended to correct the compass deviation (quadrantal deviation) resulting from magnetism from ferrous metal in a ship.
  • quasi-stellar object — quasar. Abbreviation: QSO.
  • 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
  • receivables turnover — A receivables turnover is a measure of cash flow that is calculated by dividing net credit sales by average accounts receivable.
  • reconcile an account — If you reconcile an account, you compare the items in a bank statement, credit card statement, or vendor statement with the entries on your books and make sure that the statement and books match.
  • recreational therapy — therapy by means of recreational activities engaged in by the patient
  • recreational vehicle — a van or utility vehicle used for recreational purposes, as camping, and often equipped with living facilities. Abbreviation: RV.
  • 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.
  • 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
  • romantic involvement — the condition of being in a romantic or sexual relationship
  • root canal treatment — dental treatment
  • 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.
  • satellite chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
  • schizoid personality — sb with identity disorder
  • 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 sockets layer — (networking, security)   (SSL) A protocol designed by Netscape Communications Corporation to provide secure communications over the Internet using asymmetric key encryption. SSL is layered beneath application protocols such as HTTP, SMTP, Telnet, FTP, Gopher and NNTP and is layered above the connection protocol TCP/IP. It is used by the HTTPS access method.
  • semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
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