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19-letter words containing p, a

  • occupation grouping — a category in a system of classifying people according to occupation, based originally on information obtained by government census and subsequently developed by market research. The classifications are used by the advertising industry to identify potential markets. The groups are A, B, C1, C2, D, and E
  • occupational hazard — a danger or hazard to workers that is inherent in a particular occupation: Silicosis is an occupational hazard of miners.
  • occupational health — Occupational health is the branch of medicine that deals with the health of people in their workplace or in relation to their job.
  • oceanus procellarum — (Ocean of Storms) the largest dark plain on the face of the moon, in the second and third quadrants: about 2 million square miles (5.2 million sq. km).
  • old english pattern — a spoon pattern having a stem curving backward at the end.
  • old spanish customs — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
  • on an empty stomach — If you do something on an empty stomach, you do it without having eaten.
  • on pins and needles — a tingly, prickly sensation in a limb that is recovering from numbness.
  • one's pride and joy — Someone or something that is your pride and joy is very important to you and makes you feel very happy.
  • open the floodgates — If events open the floodgates to something, they make it possible for that thing to happen much more often or much more seriously than before.
  • open-angle glaucoma — Ophthalmology. abnormally high fluid pressure in the eye, most commonly caused either by blockage of the channel through which aqueous humor drains (open-angle glaucoma or chronic glaucoma) or by pressure of the iris against the lens, which traps the aqueous humor (angle-closure glaucoma or acute glaucoma)
  • open-hearth furnace — a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
  • open-hearth process — a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
  • operational testing — (testing)   A US DoD term for testing performed by the end-user on software in its normal operating environment.
  • operations director — a director or senior manager who oversees the efficiency of business operations
  • operations research — the analysis, usually involving mathematical treatment, of a process, problem, or operation to determine its purpose and effectiveness and to gain maximum efficiency.
  • optical 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)
  • optical mark reader — (hardware)   (OMR) A special scanning device that can read carefully placed pencil marks on specially designed documents. OMR is frequenty used in forms, questionnaires, and answer-sheets.
  • oral interpretation — the study and practice of vocally expressing the meaning of written compositions, especially of literature.
  • ordnance survey map — An Ordnance Survey map is a detailed map produced by the British or Irish government map-making organization.
  • orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
  • orthopaedic surgery — surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
  • outplacement agency — an agency that provides counselling and careers advice, esp to redundant executives, which is paid for by their previous employer
  • over-interpretation — the act of interpreting; elucidation; explication: This writer's work demands interpretation.
  • overhead projection — the projection (using an overhead projector) of an enlarged image of a transparency onto a surface above and behind the person using it
  • overplay one's hand — If you say that someone is overplaying something such as a problem, you mean that they are making it seem more important than it really is.
  • oxidation potential — (in a galvanic cell) the potential of the electrode at which oxidation occurs.
  • palaeoethnobotanist — someone who studies fossil seeds and grains to further archaeological knowledge, esp of the domestication of cereals
  • paleoanthropologist — the study of the origins and predecessors of the present human species, using fossils and other remains.
  • palisade parenchyma — the upper layer of ground tissue in a leaf, consisting of elongated cells beneath and perpendicular to the upper epidermis and constituting the primary area of photosynthesis.
  • palomar observatory — an astronomical observatory situated on Palomar Mountain in S California, having a 200-inch (508-cm) reflecting telescope and a 48-inch (122-cm) Schmidt telescope.
  • pancreatic fibrosis — cystic fibrosis.
  • papal infallibility — the dogma that the pope cannot err in a solemn teaching addressed to the whole church on a matter of faith or morals.
  • parachute spinnaker — a very large spinnaker used on a racing yacht.
  • paradichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
  • parainfluenza virus — any of a group of viruses that cause respiratory infections with influenza-like symptoms, esp in children
  • parallactic ellipse — the apparent ellipse, as seen against the background of more distant stars, described annually by a nearby star because of the earth's orbital motion around the sun. Compare parallax (def 2).
  • parallel processing — extending in the same direction, equidistant at all points, and never converging or diverging: parallel rows of trees.
  • parallel projection — a projection from one plane to a second plane in which the lines joining points on the first plane and corresponding images are parallel.
  • parametric equation — one of two or more equations expressing the location of a point on a curve or surface by determining each coordinate separately.
  • paraphase amplifier — an amplifier that produces a push-pull output from a single input.
  • parasympathomimetic — having an effect similar to that produced when the parasympathetic nervous system is stimulated
  • parathyroid extract — an aqueous preparation obtained from the parathyroid gland of cattle, used in medicine chiefly in cases of parathyroid deficiency and in veterinary medicine in the treatment of tetanic convulsions.
  • parathyroid hormone — a polypeptide hormone, produced in the parathyroid glands, that helps regulate the blood levels of calcium and phosphate. Abbreviation: PTH.
  • parkinson's disease — a common neurologic disease believed to be caused by deterioration of the brain cells that produce dopamine, occurring primarily after the age of 60, characterized by tremors, especially of the fingers and hands, muscle rigidity, shuffling gait, slow speech, and a masklike facial expression.
  • parliament building — structure housing legislative offices
  • parliamentary agent — (in Britain) a person who is employed to manage the parliamentary business of a private group
  • parthenogenetically — development of an egg without fertilization.
  • participatory sport — a sport in which people take part, (as opposed to a spectator sport)
  • particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
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