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18-letter words containing p, a, t, r, i, l

  • isothermal process — a process that takes place without change in temperature.
  • italian provincial — designating or of a style of rural, Italian furniture of the 18th and 19th cent., with straight lines and simple decoration, usually of fruitwood or mahogany
  • killer application — a highly innovative, very powerful, or extremely useful computer application; esp one sufficiently important as to justify purchase of the equipment or software
  • lake pontchartrain — a shallow lagoon in SE Louisiana, linked with the Gulf of Mexico by a narrow channel, the Rigolets: resort and fishing centre. Area: 1620 sq km (625 sq miles)
  • laurentian plateau — (in Canada) the wide area of Precambrian rock extending west from the Labrador coast to the basin of the Mackenzie and north from the Great Lakes to Hudson Bay and the Arctic: rich in minerals
  • lenticular process — a method for producing images with a three-dimensional effect by photographing on lenticulated film.
  • linear perspective — a mathematical system for representing three-dimensional objects and space on a two-dimensional surface by means of intersecting lines that are drawn vertically and horizontally and that radiate from one point (one-point perspective) two points (two-point perspective) or several points on a horizon line as perceived by a viewer imagined in an arbitrarily fixed position.
  • lithostratigraphic — Of or pertaining to lithostratigraphy.
  • logarithmic spiral — log r = aθ
  • lone-parent family — a family in which there is only one parent
  • lower palaeolithic — the earliest of the three sections of the Palaeolithic, beginning about 3 million years ago and ending about 70 000 bc with the emergence of Neanderthal man
  • magnetic amplifier — an amplifier that applies the input signal to a primary winding and feeds an alternating current to a secondary winding where this current is modulated by the variations in the primary winding.
  • maternity hospital — birthing facility
  • methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
  • mexican fire-plant — a showy plant, Euphorbia heterophylla, of the spurge family, growing in the central U.S. to central South America, having red or mottled red and white bracts.
  • microencapsulation — the process of enclosing chemical substances in microcapsules.
  • micrometer caliper — calipers with a micrometer screw, for extremely accurate measurement
  • micrometer-caliper — any of various devices for measuring minute distances, angles, etc., as in connection with a telescope or microscope.
  • micropalaeontology — the branch of palaeontology concerned with the study of microscopic fossils
  • military policeman — A military policeman is a member of the military police.
  • mineral supplement — a pill containing minerals that you take to improve your health
  • moccasin telegraph — the transmission of rumour or secret information; the grapevine
  • morning-after pill — a contraceptive pill containing only an estrogen and used by women within a few hours after sexual intercourse.
  • myeloproliferative — (medicine) of or pertaining to the presence of an abnormal proliferation of myelopoietic cells (from bone marrow).
  • natural philosophy — natural science.
  • nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
  • neuroleptanalgesia — a semiconscious nonreactive state induced by certain drug combinations, as fentanyl with droperidol.
  • nobiliary particle — a preposition forming part of a title of nobility or surname, as French de or German von.
  • nonpartisan league — a political organization of farmers, founded in North Dakota in 1915, and extending to many states west of the Mississippi, with the aim of influencing agricultural legislation in state legislatures.
  • nonpreferentialism — of, relating to, or of the nature of preference: preferential policies.
  • normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
  • north polar region — the region of land and water surrounding the North Pole.
  • nuclear capability — If a country has nuclear capability, it is able to produce nuclear power and usually nuclear weapons.
  • numerical aperture — a measure of the resolving power of a microscope, equal to the index of refraction of the medium in which the object is placed multiplied by the sine of the angle made with the axis by the most oblique ray entering the instrument, the resolving power increasing as the product increases. Abbreviation: N.A.
  • occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
  • octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
  • offset lithography — offset (def 6).
  • operation overlord — the codename for the Allied invasion (June 1944) of northern France
  • operationalisation — Alternative spelling of operationalization.
  • operationalization — The act or process of operationalizing.
  • optical brightener — an additive that dyes and brightens fabric or paper
  • optical carrier 12 — (networking)   (OC-12) A SONET rate of 12 * 51.84 = 622.08 megabits per second.
  • optical carrier 48 — (networking)   (OC-48) A SONET rate of 48 * 51.84 = 2488.32 megabits per second.
  • optical disc drive — optical disk drive
  • optical disk drive — (hardware)   (Or "optical disc drive", "optical storage") A generic term for any device that reads and/or writes optical media, i.e. compact discs, DVDs and/or Blu-ray discs or future media that uses light (from a small laser) to read data off a removable, rotating disk. At least one such drive is commonly installed in most personal computers to allow them to play and/or record audio and video media and load and store data such as program installers. The floppy disk has been replaced by optical media due to its vastly greater capacity, e.g. 50,000 megabytes for a dual-layer blu-ray disc compared with 1.5 megabytes for a floppy (over 30,000 times as much).
  • optical microscope — traditional magnifying instrument
  • optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
  • oracle corporation — (company)   The world's leading supplier of information management software. The company, worth $2 billion, offers its products, along with related consulting, education and support services in more than 90 countries around the world. Oracle is best known for its database management systems vendor and relational DBMS products. Oracle develops and markets Oracle Media Server and the Oracle7 family of software products for database management; Co-operative Development Environment and Oracle Co-operative Applications Oracle software runs on personal digital assistants, set-top boxs, IBM PCs, workstations, minicomputers, mainframes and massively parallel computers. Oracle bought Sun Microsystems on 2009-04-20. See also Adaptable User Interface, Bookviewer, CASE*Method, Component Integration Laboratories, DDE Manager, Online Media, Oracle Card, Oracle*CASE, siod. Address: Redwood Shores, CA, USA.
  • oral contraceptive — birth-control pill.
  • oriental scops owl — any of a group of small owls having ear tufts and a whistling call, especially Otus scops (Old World scops owl) and O. sunia (Oriental scops owl)
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