17-letter words containing p, o, d, i

periodic function — a function of a real or complex variable that is periodic.
periodic sentence — a sentence that, by leaving the completion of its main clause to the end, produces an effect of suspense, as in Unable to join the others at the dance because of my sprained ankle, I went to a movie.
periodical cicada — seventeen-year locust.
personal distance — personal space.
perth and kinross — a council area of N central Scotland, corresponding mainly to the historical counties of Perthshire and Kinross-shire: part of Tayside Region from 1975 until 1996: chiefly mountainous, with agriculture, tourism, and forestry. Administrative centre: Perth. Pop: 135 990 (2003 est). Area: 5321 sq km (2019 sq miles)
phenylformic acid — benzoic acid.
photoconductivity — the increase in the electrical conductivity of a substance, often nonmetallic, caused by the absorption of electromagnetic radiation.
photodissociation — the dissociation or breakdown of a chemical compound by radiant energy.
phumiphon aduldet — (Phumiphon Aduldet; Bhumibol Adulyadej) born 1927, king of Thailand since 1946.
pietro da cortona — Pietro da [pye-traw dah] /ˈpyɛ trɔ dɑ/ (Show IPA), (Pietro Berrettini) 1596–1669, Italian painter and architect.
pink-footed goose — a Eurasian goose, Anser brachyrhynchus, having a reddish-brown head, pink legs, and a pink band on its black beak
platinic chloride — chloroplatinic acid.
pocket dictionary — a small portable dictionary
polar coordinates — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
police department — A police department is an official organization which is responsible for making sure that people obey the law.
police procedural — a mystery novel, film, or television drama that deals realistically with police work.
polyadenylic acid — a homopolymer of adenylic acid enzymatically added to messenger RNA in eukaryotic cells to inhibit the hydrolytic breakdown of messenger RNA.
positive definite — (of a quadratic form) positive for all real values of the variables, where the values are not all zero.
positive feedback — Electronics. the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback) acoustic feedback.
post-and-rail tea — (in the 19th century) a coarse tea in which floating particles resembled a post-and-rail fence
post-depositional — removal from an office or position.
post-independence — Also, independency. the state or quality of being independent.
postural drainage — a therapy for clearing congested lungs by placing the patient in a position for drainage by gravity, often accompanied by percussion with hollowed hands.
potassium bromide — a white, crystalline, water-soluble powder, KBr, having a bitter saline taste: used chiefly in the manufacture of photographic papers and plates, in engraving, and in medicine as a sedative.
potassium cyanide — a white, granular, water-soluble, poisonous powder, KCN, having a faint almondlike odor, used chiefly in metallurgy and photography.
potential divider — a resistor or series of resistors connected to a voltage source and used to provide voltages that are fractions of that of the source.
pre-modifications — an act or instance of modifying.
predatory pricing — If a company practises predatory pricing, it charges a much lower price for its products or services than its competitors in order to force them out of the market.
prescription drug — medication available only on doctor's instruction
presiding officer — the person who presides over the Scottish Parliament or Welsh Assembly
primary dentition — the deciduous dentition
primary education — junior, elementary schooling
private education — education provided by a private individual or organization, rather than by the state or a public body
product liability — the responsibility of a manufacturer for injury or loss caused by its product.
production number — a specialty number or routine, usually performed by the entire cast consisting of musicians, singers, dancers, stars, etc., of a musical comedy, vaudeville show, or the like.
production string — A production string is the series of pipes through which the oil or gas is brought up from the reservoir.
production system — (programming) A production system consists of a collection of productions (rules), a working memory of facts and an algorithm, known as forward chaining, for producing new facts from old. A rule becomes eligible to "fire" when its conditions match some set of elements currently in working memory. A conflict resolution strategy determines which of several eligible rules (the conflict set) fires next. A condition is a list of symbols which represent constants, which must be matched exactly; variables which bind to the thing they match and "<> symbol" which matches a field not equal to symbol. Example production systems are OPS5, CLIPS, flex.
production values — the quality of a media production (such as a film) in regards to elements such as colours, quality, style, etc
proficiency badge — an insignia or device granted by the Girl Scouts and worn especially on a uniform to indicate special achievement.
programming fluid — (jargon) (Or "wirewater") Coffee, unleaded coffee (decaffeinated), Cola, or any caffeinacious stimulant. Many hackers consider these essential for those all-night hacking runs.
proof of identity — a document or documents used to verify someone's identity
propanedioic acid — a colourless crystalline compound occurring in sugar beet. Formula: C3H4O4,CH2(COOH)2
proprietary brand — a brand of product that is privately owned and controlled
protected species — a species of animal or plant which it is forbidden by law to harm or destroy
prothoracic gland — either of a pair of endocrine glands in the anterior thorax of some insects, functioning to promote the series of molts from hatching to adulthood.
prusso-danish war — a war of 1864 between Prussia and Denmark by which Denmark lost Schleswig-Holstein.
pseudo-aggressive — characterized by or tending toward unprovoked offensives, attacks, invasions, or the like; militantly forward or menacing: aggressive acts against a neighboring country.
pseudo-biological — pertaining to biology.
pseudo-democratic — pertaining to or of the nature of democracy or a democracy.
pseudo-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.

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