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20-letter words containing p, a, r, l

  • post-order traversal — traversal
  • postal delivery zone — zone (def 10).
  • postnatal depression — a form of clinical depression that occurs in mothers after the birth of a baby
  • potential difference — voltage
  • poza rica de hidalgo — a city in N Veracruz, in E Mexico.
  • practical imperative — (in Kantian ethics) the dictum that one should treat oneself and all humanity as an end and never as a means.
  • prefecture apostolic — a territory in the early stage of missionary development.
  • premenstrual tension — Premenstrual tension is the same as premenstrual syndrome. The abbreviation PMT is often used.
  • prenuptial agreement — A prenuptial agreement is a written contract made between a man and a woman before they marry, in which they state how their assets such as property and money should be divided if they get divorced.
  • prepatellar bursitis — inflammation and swelling of the bursa in front of the kneecap, caused esp by constant kneeling on a hard surface
  • prepositional phrase — a phrase consisting of a preposition, its object, which is usually a noun or a pronoun, and any modifiers of the object, as in the gray desk I use.
  • prescription glasses — corrective spectacles
  • presidential primary — a direct primary for the selection of state delegates to a national party convention and the expression of preference for a U.S. presidential nominee.
  • primary optical area — a point in or toward the upper left-hand corner of a printed page, advertisement, or the like, looked at first in reading. Abbreviation: POA.
  • primitive polynomial — a polynomial that has content equal to 1. Compare content1 (def 11a).
  • prince edward island — an island in the Gulf of St. Lawrence, forming a province of Canada: 2184 sq. mi. (5655 sq. km). Capital: Charlottetown.
  • prince william sound — a sound in the Gulf of Alaska, on the S coast of Alaska: S end of Trans-Alaska oil pipeline at port of Valdez.
  • probability function — the function the values of which are probabilities of the distinct outcomes of a discrete random variable
  • procedural agreement — regulations agreed between the parties to collective bargaining, defining the bargaining units, bargaining scope, procedures for collective bargaining, and the facilities to be provided to trade union representatives
  • programming language — a high-level language used to write computer programs, as COBOL or BASIC, or, sometimes, an assembly language.
  • property speculation — the buying or selling of property in the hope of deriving capital gains
  • proportional counter — a radiation counter in which the strength of each electric pulse generated per count is proportional to the energy of the particle or photon producing the pulse, alpha particles producing a different electric pulse from beta rays.
  • proportional spacing — a feature of some typewriters and other output devices whereby the space allotted to each character is determined by the width of the character
  • propylphenyl acetate — phenylpropyl acetate.
  • prothonotary warbler — a wood warbler, Protonotaria citrea, of the eastern U.S., having an orange-yellow head and underparts, and bluish-gray wings and tail.
  • psychiatric hospital — institution treating mental disorders
  • public administrator — an official of a city, county, or state government.
  • pull (one's) rank on — to take advantage of one's military rank in enforcing commands or one's high position or seniority in making demands on (a subordinate)
  • pure lambda-calculus — Lambda-calculus with no constants, only functions expressed as lambda abstractions.
  • pyrenees-atlantiques — a department in SW France. 2978 sq. mi. (7710 sq. km). Capital: Pau.
  • pyroligneous alcohol — methyl alcohol.
  • rattlesnake plantain — any of several low, terrestrial orchids, as Goodyera repens, of northern temperate regions, having a basal rosette of leaves with white veins and a one-sided spike of white flowers.
  • read-eval-print loop — (language, LISP, programming)   (REPL) A programming structure within LISP which repeatedly reads a form from the user, evaluates it, and displays the result. A read-eval-print loop forms the basis of the Top-Level shell that programmers of the LISP family of languages interact with. In many dialects of LISP a very simple REPL could be implemented as: (loop (print (eval (read)))). (2003-06-23)
  • real-time processing — data-processing by a computer which receives constantly changing data, such as information relating to air-traffic control, travel booking systems, etc, and processes it sufficiently rapidly to be able to control the source of the data
  • reciprocal insurance — insurance in which members of a reciprocal exchange, acting through an attorney-in-fact, insure themselves and each other.
  • recreational therapy — therapy by means of recreational activities engaged in by the patient
  • red-legged partridge — a partridge, Alectoris rufa, having a reddish tail, red legs and bill, and flanks barred with chestnut, black, and white: common on farmlands and heaths in SW Europe, including Britain
  • refracting telescope — an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. Compare radio telescope.
  • refuse disposal unit — a unit or part of a sink that disposes of waste food, etc, by grinding
  • regional development — aid-giving to poorer areas or countries
  • relative deprivation — the perception of an unfair disparity between one's situation and that of others.
  • relative probability — a measure or estimate of the degree of confidence one may have in the occurrence of an event, defined as the limit of the proportion observed in a sample as the sample size tends to infinity
  • republic of maldives — a republic occupying an archipelago of 1087 coral islands in the Indian Ocean, southwest of Sri Lanka: came under British protection in 1887; became independent in 1965 and a republic in 1968; member of the Commonwealth (1982–2016). The economy and infrastructure were severely damaged in the Indian Ocean tsunami of December 2004. Official language: Divehi. Official religion: (Sunni) Muslim. Currency: rufiyaa. Capital: Malé. Pop: 393 988 (2013 est). Area: 298 sq km (115 sq miles)
  • request for proposal — (programming)   (RFP) The publication by a prospective software purchaser of details of the required system in order to attract offers by software developers to supply it. Software development under contract starts with the selection of the software developer by the customer. A request for proposal (also called in Britain an "invitation to tender") is the beginning of the selection process.
  • rhineland-palatinate — a state in W Germany: formerly part of Rhine Province. 7655 sq. mi. (19,825 sq. km). Capital: Mainz.
  • royal leamington spa — a city in Warwickshire, central England: health resort.
  • sailor's breastplate — a knot consisting of three overlapping loops formed by a single rope passed alternately over and under itself at crossings.
  • sales representative — a person or organization designated by a company to solicit business on its behalf in a specified territory or foreign country: I suggest you contact our Chicago sales representative.
  • satellite photograph — a photograph taken by an artificial satellite from space
  • schizoid personality — sb with identity disorder
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