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19-letter words containing a, t, n

  • parthenogenetically — development of an egg without fertilization.
  • particle kinematics — Particle kinematics is the study of the movement of particles, without considering the forces that cause this movement.
  • 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 negative — a proposition of the form “Some S is not P.” Symbol: O.
  • 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.
  • paschen-back effect — a splitting of spectral lines observed when the source of a radiation is subjected to a strong magnetic field, caused when the vectors associated with the spin and orbital angular momentum exhibit individual rather than common precession.
  • pastoral counseling — the use of psychotherapeutic techniques by trained members of the clergy to assist parishioners who seek help for personal or emotional problems.
  • patent infringement — breach of copyright
  • pattern recognition — the automated identification of shapes or forms or patterns of speech.
  • peak listening time — the time at which the highest numbers of audiences are listening to the radio
  • pecuniary advantage — financial advantage that is dishonestly obtained by deception and that constitutes a criminal offence
  • pedestrian crossing — place to cross road
  • pedestrian precinct — A pedestrian precinct is a street or part of a town where vehicles are not allowed.
  • penecontemporaneous — formed during or shortly after the formation of the containing rock stratum: penecontemporaneous minerals.
  • 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
  • peridental membrane — periodontal membrane.
  • 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
  • permanent secretary — the senior civil servant responsible for running a government ministry
  • perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
  • perpetual debenture — a bond or debenture that can either never be redeemed or cannot be redeemed on demand
  • perpetual inventory — a form of stock control in which running records are kept of all acquisitions and disposals
  • persian gulf states — group of Arab sheikdoms along the Persian Gulf: Kuwait, Bahrain, Qatar, & United Arab Emirates
  • personal stationery — headed notepaper
  • personal watercraft — a jet-propelled boat ridden like a motorcycle.
  • phacoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
  • phakoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
  • 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.
  • phenylethyl alcohol — phenethyl alcohol.
  • 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.
  • photopolymerization — polymerization induced by light.
  • photoreconnaissance — reconnaissance using aerial photography.
  • phthalocyanine blue — a pigment used in painting, derived from copper phthalocyanine and characterized chiefly by its brilliant, dark-blue color and by permanence.
  • physical impairment — A physical impairment is a condition in which a part of a person's body is damaged or is not working properly.
  • physical sequential — (file format)   (PS, QSAM, Queued Sequential Access Method) The simplest data set on an IBM mainframe. Sequential files can only be read or written from the beginning: they do not support random access.
  • physician assistant — a person trained and certified to perform various medical procedures under the supervision of a physician
  • piece de resistance — the principal dish of a meal.
  • piece of the action — the process or state of acting or of being active: The machine is not in action now.
  • piggyback investing — Piggyback investing is a situation in which a broker repeats a trade on his own behalf immediately after trading for an investor, because he thinks the investor may have inside information.
  • pinwheel escapement — a clock escapement in which two pallets, usually of unequal length, alternately engage and release pins set on the escape wheel perpendicular to its plane of rotation.
  • pirates of penzance — an operetta (1879) by Sir William S. Gilbert and Sir Arthur Sullivan.
  • pistol-handle knife — a table knife, especially of the 18th century, having a slightly curved handle resembling the grip of a flintlock pistol.
  • plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
  • play fast and loose — a dramatic composition or piece; drama.
  • pneumatic conveying — Pneumatic conveying is the movement of powdered or granulated solids using air.
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