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18-letter words containing l, d, o, p

  • normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
  • oedipus at colonus — a tragedy by Sophocles, written toward the end of his life and produced posthumously in 401? b.c.
  • old curiosity shop — a novel (1840–41) by Dickens.
  • operation overlord — the codename for the Allied invasion (June 1944) of northern France
  • 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 The floppy disk has been replaced by optical media due to its vastly greater capacity, e.g. 50,000 megabytes for a dual-layer blu-ray disc compared with 1.5 megabytes for a floppy (over 30,000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 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.
  • 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.
  • 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.
  • parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
  • passing modulation — a modulation of a temporary nature.
  • payload specialist — an astronaut trained to handle highly complex or classified equipment carried aboard a space shuttle and to conduct experiments in space.
  • pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
  • people's democracy — (in Communist ideology) a country or form of government in transition from bourgeois democracy to socialism. In this stage there is more than one class, the largest being the proletariat, led by the Communist Party, which is therefore the dominant power
  • percussion welding — a form of resistance welding in which the required pressure is provided by a hammerlike blow.
  • personal bodyguard — a person employed to protect a particular person
  • pescadores-islands — (used with a plural verb) Penghu.
  • peter and the wolf — a composition by Sergei Prokofiev written in 1936. It is a children's story with both music and text, spoken by a narrator accompanied by the orchestra
  • phantom withdrawal — the unauthorized removal of funds from a bank account using an automated teller machine
  • phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
  • physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
  • pileolated warbler — either of two western subspecies of Wilson's warbler.
  • piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
  • plane of incidence — a plane determined by a given ray, incident on a surface, and the normal at the point where the incident ray strikes the surface.
  • planned parenthood — an organization that gives out information on the planning of the number and spacing of the births of one's children, as through the use of birth-control measures
  • plate-glass window — a window that has glass which has been formed by rolling
  • platinocyanic acid — the hypothetical acid containing platinum and the cyano group, H 2 Pt(CN) 4 .
  • play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
  • play second fiddle — be considered less important
  • point d'angleterre — a bobbin lace in which the design is worked out with either a needle or bobbin.
  • politically-minded — (of a person or group of people) interested in the way power is achieved and used in a country or society (through government, policy-making, etc)
  • polyvinyl chloride — a white, water-insoluble, thermoplastic resin, derived by the polymerization of vinyl chloride: used chiefly for thin coatings, insulation, and pipings.
  • population density — ratio: inhabitants to area
  • population pyramid — a graph showing the distribution of a population by sex, age, etc.
  • portion-controlled — being a standardized portion of food: The restaurant uses frozen, portion-controlled entrées.
  • portrait of a lady — a novel (1881) by Henry James.
  • positively charged — having a positive charge
  • postviral syndrome — debilitating condition occurring as a sequel to viral illness
  • potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
  • potassium fluoride — a white, crystalline, hygroscopic, toxic powder, KF, used chiefly as an insecticide, a disinfectant, and in etching glass.
  • potential gradient — the rate of change of potential with respect to distance in the direction of greatest change.
  • pour cold water on — If someone pours cold water on a plan or idea, they criticize it so much that people lose their enthusiasm for it.
  • precedence lossage — /pre's*-dens los'*j/ A misunderstanding of operator precedence resulting in unintended grouping of arithmetic or logical operators when coding an expression. Used especially of mistakes in C code due to the nonintuitively low precedence of "&", "|", "^", "<<" and ">>". For example, the following C expression, intended to test the least significant bit of x, x & 1 == 0 is parsed as x & (1 == 0) which is always zero (false). Some lazy programmers ignore precedence and parenthesise everything. Lisp fans enjoy pointing out that this can't happen in *their* favourite language, which eschews precedence entirely, requiring one to use explicit parentheses everywhere.
  • primate of england — a title of the archbishop of Canterbury.
  • principal diagonal — a diagonal line or plane.
  • prisoner's dilemma — (in game theory) a scenario in which the outcome of one person's decision is determined by the simultaneous decisions of the other participants, resulting in a bad outcome for all of them if all act in their own self-interest.
  • process scheduling — multitasking
  • product life cycle — the four stages (introduction, growth, maturity, and decline) into one of which the sales of a product fall during its market life
  • production control — the planning and supervision of manufacturing activities to ensure that goods will be produced on time at the lowest possible cost.
  • property developer — person: deals in real estate
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