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19-letter words containing p, a, t, r, o

  • occupational hazard — a danger or hazard to workers that is inherent in a particular occupation: Silicosis is an occupational hazard of miners.
  • old english pattern — a spoon pattern having a stem curving backward at the end.
  • 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.
  • 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
  • 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
  • paleoanthropologist — the study of the origins and predecessors of the present human species, using fossils and other remains.
  • 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.
  • 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.
  • 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.
  • 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.
  • particle separation — a rule that moves the particle of a phrasal verb, thus deriving a sentence like He looked the answer up from a structure that also underlies He looked up the answer
  • particle technology — Particle technology is knowledge and study which relates to particles, and is used in industry.
  • particular solution — a solution of a differential equation containing no arbitrary constants.
  • parting of the ways — When there is a parting of the ways, two or more people or groups of people stop working together or travelling together.
  • party-column ballot — Indiana ballot.
  • pastoral counseling — the use of psychotherapeutic techniques by trained members of the clergy to assist parishioners who seek help for personal or emotional problems.
  • patrol torpedo boat — PT boat.
  • pattern recognition — the automated identification of shapes or forms or patterns of speech.
  • paumotu archipelago — Tuamotu Archipelago.
  • pedestrian crossing — place to cross road
  • penecontemporaneous — formed during or shortly after the formation of the containing rock stratum: penecontemporaneous minerals.
  • perfoliate bellwort — a slender plant, Uvularia perfoliata, of the lily family, of eastern North America, having pale yellow, bell-shaped flowers.
  • performance anxiety — the stage fright that a person feels when they are about to perform (a play, piece of music etc) in front of an audience
  • performance targets — the expected or predicted success level of an individual, company or organization
  • periodontal disease — any of various mixed bacterial infections that affect the soft tissues and bones supporting the teeth.
  • peritoneal dialysis — a form of dialysis in which the peritoneum is used as an autogenous semipermeable membrane
  • perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
  • perpetual inventory — a form of stock control in which running records are kept of all acquisitions and disposals
  • personal stationery — headed notepaper
  • personal watercraft — a jet-propelled boat ridden like a motorcycle.
  • phenanthrenequinone — a yellowish-orange, crystalline, water-insoluble solid, C 1 4 H 8 O 2 , used chiefly in organic synthesis and the manufacture of dyes.
  • phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
  • photodisintegration — the disintegration of a nucleus, induced by its absorption of a photon.
  • photographic memory — total recall
  • photopolymerization — polymerization induced by light.
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