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18-letter words containing p, r, a, c, t

  • nobiliary particle — a preposition forming part of a title of nobility or surname, as French de or German von.
  • non-impact printer — a printer that creates images without mechanically impacting the page, as an ink-jet or laser printer.
  • nonaggression pact — an agreement between two nations not to attack each other, usually for a specified period of years
  • north truchas peak — a mountain in N New Mexico, near Santa Fe: one of the three Truchas Peaks. 13,110 feet (3999 meters).
  • noun incorporation — a process in word formation by which a compound is created by affixing or infixing a noun to a verb, as in baby-sit, house-hunt, and sleep-walk.
  • 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.
  • nurse practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
  • nurse-practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
  • 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.
  • 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)
  • orthophthalic acid — Chemistry. any of three isomeric acids having the formula C 8 H 6 O 4 , especially the ortho isomer (orthophthalic acid) a colorless, crystalline, slightly water-soluble solid used chiefly in the manufacture of dyes, medicine, and perfume.
  • outreach programme — a programme designed to help and encourage disadvantaged members of the community
  • over-pronunciation — to pronounce (a word, syllable, etc.) in an exaggerated, affected, or excessively careful manner.
  • overcapitalization — The state of being overcapitalized.
  • overhead projector — over one's head; aloft; up in the air or sky, especially near the zenith: There was a cloud overhead.
  • overspecialization — excessive specialization, as in a field of study.
  • paediatric nursing — the branch of nursing concerned with the care of children
  • pair of spectacles — a score of 0 in each innings of a match
  • par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
  • parachute regiment — an airborne regiment of an army
  • parallactic motion — the apparent motion of stars due to the earth's orbital motion.
  • parallel computing — parallel processing
  • parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
  • particeps criminis — an accomplice in a crime.
  • particular average — a loss at sea, as through accident or negligence, that is borne solely by the owner of the lost property. Abbreviation: P.A.
  • particulate filter — A particulate filter is a filter to remove particles that are present the air, for example in the exhaust of a diesel engine.
  • particulate matter — Particulate matter is solid or liquid particles in the air, which are measured in PM-10 units and are particles with a diameter of ten micrometers or less.
  • passive resistance — opposition to a government or to specific governmental laws by the use of noncooperation and other nonviolent methods, as economic boycotts and protest marches.
  • pay one's respects — a particular, detail, or point (usually preceded by in): to differ in some respect.
  • pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
  • pedestrian traffic — the people coming and going on foot in a street, town, etc
  • people trafficking — the practice of bringing immigrants into a country illegally
  • peppermint camphor — menthol.
  • percentile ranking — the percentage of scores that a particular score is greater than
  • perceptual defence — the process by which it is thought that certain stimuli are either not perceived or are distorted due to their offensive, unpleasant, or threatening nature
  • perceptual mapping — the use of a graph or map in the development of a new product, in which the proximity of consumers' images of the new product to those of an ideal product provide an indication of the new product's likely success
  • perfect participle — past participle.
  • perforated tracery — tracery, as in early Gothic architecture, formed of cut or pierced slabs of stone set on edge with the flat side outward.
  • performance artist — an artist that is involved in a theatrical presentation that incorporates various art forms, such as dance, sculpture, music, etc
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