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16-letter words containing e, t, h, r, a

  • parliament hinge — a butt hinge the knuckle of which protrudes from the door so that the door when fully opened stands away from the wall.
  • parrot's-feather — a South American water milfoil, Myriophyllum aquaticum, having hairlike pinnate leaves, widely cultivated as an aquarium plant.
  • particle physics — the branch of physics that deals with the properties and behavior of elementary particles.
  • pascal's theorem — the theorem that the lines joining adjacent vertices of a hexagon intersect the same straight line if alternate vertices lie on two intersecting straight lines.
  • patched-together — makeshift; roughly made from disparate elements
  • pattern matching — 1. A function is defined to take arguments of a particular type, form or value. When applying the function to its actual arguments it is necessary to match the type, form or value of the actual arguments against the formal arguments in some definition. For example, the function length [] = 0 length (x:xs) = 1 + length xs uses pattern matching in its argument to distinguish a null list from a non-null one. There are well known algorithm for translating pattern matching into conditional expressions such as "if" or "case". E.g. the above function could be transformed to 2. Descriptive of a type of language or utility such as awk or Perl which is suited to searching for strings or patterns in input data, usually using some kind of regular expression.
  • peach tree borer — the larva of any of several clearwing moths, as Sanninoidea exitiosa, that bore into the wood of the peach and other drupaceous trees.
  • peano arithmetic — (mathematics)   Giuseppe Peano's system for representing natural numbers inductively using only two symbols, "0" (zero) and "S" (successor). This system could be expressed as a recursive data type with the following Haskell definition: data Peano = Zero | Succ Peano The number three, usually written "SSS0", would be Succ (Succ (Succ Zero)). Addition of Peano numbers can be expressed as a simple syntactic transformation: plus Zero n = n plus (Succ m) n = Succ (plus m n) (1995-03-28)
  • people's charter — the principles or movement of a party of political reformers, chiefly workingmen, in England from 1838 to 1848: so called from the document (People's Charter or National Charter) that contained a statement of their principles and demands.
  • perchloromethane — carbon tetrachloride.
  • peruvian rhatany — See under rhatany (def 1).
  • phalansterianism — a system by which society would be reorganized into units comprising their own social and industrial elements; Fourierism.
  • pharmacogenetics — the branch of pharmacology that examines the relation of genetic factors to variations in response to drugs.
  • pharmacokinetics — the branch of pharmacology that studies the fate of pharmacological substances in the body, as their absorption, distribution, metabolism, and elimination.
  • pheochromocytoma — a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc.
  • phosphor fatigue — screen saver
  • photopolarimeter — a polarimeter that uses a photocell.
  • photorespiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
  • phrase structure — the hierarchical arrangement of the constituent words and phrases of a sentence.
  • physical therapy — the treatment or management of physical disability, malfunction, or pain by exercise, massage, hydrotherapy, etc., without the use of medicines, surgery, or radiation.
  • phytoremediation — a process of decontaminating soil or water by using plants and trees to absorb or break down pollutants.
  • pithecanthropine — of, belonging to, or resembling a former genus (Pithecanthropus, now classified as Homo erectus) of extinct early humans, who lived in Java, China, Europe, and Africa
  • pithecanthropoid — of, relating to, or resembling the former genus Pithecanthropus or one of its members.
  • player character — a character in a role-playing game or video game who is controlled by the person playing the game. Abbreviation: PC. Compare nonplayer character.
  • plutarch's lives — (Parallel Lives) a collection (a.d. 105–15) by Plutarch of short biographies of the leading political figures of ancient Greece and Rome.
  • pneumatic trough — a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.
  • poitou-charentes — a region of W central France, on the Bay of Biscay: mainly low-lying
  • poor white trash — white trash.
  • port authorities — the body with overall responsibility for a port
  • practice teacher — student teacher
  • pragmatic theory — the theory of truth that the truth of a statement consists in its practical consequences, especially in its agreement with subsequent experience.
  • prince's feather — a tall, showy plant, Amaranthus hybridus erythrostachys, of the amaranth family, having reddish foliage and thick spikes of small, red flowers.
  • prince's-feather — a tall, showy plant, Amaranthus hybridus erythrostachys, of the amaranth family, having reddish foliage and thick spikes of small, red flowers.
  • protestant ethic — work ethic.
  • pseudohistorical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
  • psychogeriatrics — the psychology of old age.
  • purchase request — A purchase request is a document detailing required items, the number required and when they will be required. Once approved it becomes a purchase order.
  • purchasing agent — a person who buys materials, supplies, equipment, etc., for a company.
  • raise the stakes — to increase the amount of money or valuables hazarded in a gambling game
  • ranikhet disease — Newcastle disease.
  • rape of the lock — a mock-epic poem (1712) by Alexander Pope.
  • rare-earth metal — any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons.
  • rate of exchange — exchange rate.
  • re-chromatograph — to separate and analyse (a mixture of liquids or gases) by means of chromatography a second or further time
  • re-establishment — the act or an instance of establishing.
  • reaction chamber — the chamber in a rocket engine in which the reaction or combustion of fuel occurs
  • reap the harvest — If you reap the harvest, you benefit or suffer from the results of your past actions or of someone else's past actions.
  • redbank whiteoak — a city in S Tennessee.
  • registered share — a stock registered to the owner's name
  • research quantum — the standard by which the contribution to a university of individual academics is measured and on the basis of which universities receive government funding and academics are promoted
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