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18-letter words containing n, a, p, y

  • neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
  • nobiliary particle — a preposition forming part of a title of nobility or surname, as French de or German von.
  • nonachlorobiphenyl — (organic compound) Either of three isomers of the polychlorinated biphenyl containing nine chlorine atoms.
  • normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
  • not a pretty sight — If you say that someone or something is not a pretty sight, you mean that it is not pleasant to look at.
  • nuclear capability — If a country has nuclear capability, it is able to produce nuclear power and usually nuclear weapons.
  • octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
  • open heart surgery — surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
  • open-heart surgery — surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
  • palaeoanthropology — the branch of anthropology concerned with primitive man
  • paraglyph printing — the printing of the positive and negative of a radiograph superimposed in slight misalignment to give the effect of a relief.
  • parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
  • pathologic anatomy — the branch of pathology dealing with the morphologic changes in tissues.
  • pay one's respects — a particular, detail, or point (usually preceded by in): to differ in some respect.
  • payment by results — a system of wage payment whereby all or part of the wage varies systematically according to the level of work performance of an employee
  • payment in advance — If a business asks for payment in advance, the payment must be received in full before the goods or services are delivered.
  • pellitory of spain — a small Mediterranean plant, Anacyclus pyrethrum, the root of which contains an oil formerly used to relieve toothache: family Asteraceae (composites)
  • pennsylvania dutch — the descendants of 17th- and 18th-century settlers in Pennsylvania from southwest Germany and Switzerland.
  • perennial ryegrass — any of several European grasses of the genus Lolium, as L. perenne (perennial ryegrass) grown for forage in the U.S.
  • perlocutionary act — the action of affecting someone by uttering certain words
  • personal bodyguard — a person employed to protect a particular person
  • phanerocrystalline — (of a rock) having the principal constituents in the form of crystals visible to the naked eye.
  • phantasmagorically — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
  • phase-shift keying — (communications)   (PSK) A digital modulation scheme that conveys data by changing the phase of a carrier wave. The data can either determine the absolute phase relative to the unmodulated carrier or reference signal ("coherent phase-shift keying", CPSK) or the change in phase ("differential phase-shift keying", DPSK). The number of different phases used determines the amount of data that can be transmitted in each cycle. Each cycle can be considered to constitute one "symbol", e.g. with two possible phases, each cycle carries one bit. The more phases that are used, the less tollerant to noise the transmissions becomes. Alternatives to PSK are amplitude-shift keying (ASK) and frequency-shift keying (FSK).
  • phenylacetaldehyde — a colorless, oily, water-insoluble liquid, C 3 H 1 4 O, having a hyacinthlike odor: used chiefly in perfumery.
  • phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
  • phthalic anhydride — a white, crystalline, slightly water-soluble solid, C 8 H 4 O 3 , used chiefly in the manufacture of dyes, alkyd resins, and plasticizers.
  • physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
  • physical inventory — To carry out a physical inventory is to count all the stock on hand.
  • phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
  • plane trigonometry — the branch of trigonometry dealing with plane triangles.
  • 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
  • play someone false — to deceive, cheat, hoodwink, or betray someone
  • plenary indulgence — a remission of the total temporal punishment that is still due to sin after absolution. Compare indulgence (def 6).
  • pneumatic conveyor — a tube through which powdered or granular material, such as cement, grain, etc is transported by a flow of air
  • 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)
  • polynesian tattler — a sandpiper, H. incanus, native to the Pacific coastal regions
  • population density — ratio: inhabitants to area
  • population pyramid — a graph showing the distribution of a population by sex, age, etc.
  • post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
  • postviral syndrome — debilitating condition occurring as a sequel to viral illness
  • potassium myronate — sinigrin.
  • prayer of manasses — a book of the Apocrypha.
  • presentation layer — (networking)   The second highest layer (layer 6) in the OSI seven layer model. Performs functions such as text compression, code or format conversion to try to smooth out differences between hosts. Allows incompatible processes in the application layer to communicate via the session layer. Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO 8822).
  • processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
  • production company — an organization which produces, films, plays, television or radio programmes
  • property insurance — insurance coverage for land and housing
  • proprietary colony — any of certain colonies, as Maryland and Pennsylvania, that were granted to an individual or group by the British crown and that were granted full rights of self-government.
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