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20-letter words containing a, d, u, p

  • fundamental particle — elementary particle.
  • happy hunting ground — the North American Indian heaven, conceived of as a paradise of hunting and feasting for warriors and hunters.
  • hard gelatin capsule — A hard gelatin capsule is a type of capsule that is usually used to contain medicine in the form of dry powder or very small pellets.
  • hospitality industry — the hotel and accommodation industry
  • household appliances — devices or machines, usually electrical, that are in your home and which you use to do jobs such as cleaning or cooking
  • hudson's bay company — a company chartered in England in 1670 to carry on fur trading with the Indians in North America.
  • hydraulic suspension — a system of motor-vehicle suspension using hydraulic members, often with hydraulic compensation between front and rear systems (hydroelastic suspension)
  • hydrostatic pressure — Hydrostatic pressure is the pressure exerted by a liquid that depends on how deep it is.
  • hypophosphorous acid — a colorless or yellowish, water-soluble, liquid, monobasic acid, H 3 PO 2 , having a sour odor, and used as a reducing agent.
  • ideal of pure reason — God, seen as an idea of pure reason unifying the personal soul with the cosmos.
  • imported currantworm — the larva of any of several insects, as a sawfly, Nematus ribesii (imported currantworm) which infests and feeds on the leaves and fruit of currants.
  • in the public domain — able to be discussed and examined freely by the general public
  • industrial espionage — the stealing of technological or commercial research data, blueprints, plans, etc., as by a person in the hire of a competing company.
  • inland revenue stamp — a certificate issued by the Inland Revenue to acknowledge payment of tax
  • jacopo della quercia — Jacopo Della [yah-kaw-paw del-lah] /ˈyɑ kɔ pɔ ˌdɛl lɑ/ (Show IPA), 1374?–1438, Italian sculptor.
  • judicial proceedings — any action involving or carried out by a court of law
  • juno and the paycock — a play (1924) by Sean O'Casey.
  • language development — the development verbal communication skills in children
  • like death warmed up — very ill
  • llywelyn ap gruffudd — died 1282, prince of Wales (1258–82): the only Welsh ruler to be recognized as such by the English
  • magdeburg hemisphere — one of a pair of hemispherical cups from which air can be evacuated when they are placed together: used to demonstrate the force of air pressure.
  • mpeg-1 audio layer 1 — (audio, compression, algorithm)   (MP1) A simple 32-subband audio compressor using a floating point representation for subband samples. Resolution and scale factor are stored for groups of 12 subsamples. MP1 is only used for Philips DCC Digital Compact cassette with data rates of 384 kbps.
  • mpeg-1 audio layer 3 — (music, file format)   (MP3) A digital audio compression algorithm that acheives a compression factor of about twelve while preserving sound quality. It does this by optimising the compression according to the range of sound that people can actually hear. MP3 is currently (July 1999) the most powerful algorithm in a series of audio encoding standards developed under the sponsorship of the Moving Picture Experts Group (MPEG) and formalised by the International Organization for Standardization (ISO). MP3 is very different from Layer 2, using an additional MDCT layer to increase frequency resolution. Its scale factor groups are more optimised for the human ear, and it uses nonlinear sample quantisation and Huffman coding. MP3 files (filename extension ".mp3") can be downloaded from many websites and can be played using software available for most operating systems (also downloadable), e.g. Winamp for PC, MacAmp for Macintosh, and mpeg123 for Unix. MP3 files are usually downloaded completely before playing but streaming MP3 is also possible. A program called a "ripper" can be used to copy a selection from a music CD onto your hard disk and another program called an encoder can convert it to an MP3 file.
  • mpeg-2 audio layer 3 — (compression, standard, algorithm, file format)   An extention of MPEG-1 audio layer 3 for lower sampling rates (16-24 kHz) targeting bit rates from 32-64 kbps (possibly 8-160 kbps). It is often combined with MPEG-2 LSF.
  • multistep hydroplane — a motorship having a flat bottom built as a series of planes inclined forward, the ship planing on each from stem to stern as its speed increases.
  • net national product — the gross national product less allowance for depreciation of capital goods. Abbreviation: NNP.
  • occupational disease — Also called industrial disease. a disease caused by the conditions or hazards of a particular occupation.
  • pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
  • parallel of altitude — almucantar.
  • parallel of latitude — parallel (def 9).
  • pedal steel (guitar) — a steel guitar mounted on legs and equipped with pedals that serve as an additional means of changing pitch
  • pedro juan caballero — a city in E central Paraguay.
  • pentobarbital sodium — a barbiturate drug used in medicine as a sedative and hypnotic. Formula: C11H17N2O3Na
  • pentose nucleic acid — a nucleic acid containing a pentose.
  • permonosulfuric acid — persulfuric acid (def 1).
  • peroxysulphuric acid — a white hygroscopic crystalline unstable oxidizing acid. Formula: H2SO5
  • perpendicular gothic — the style of Gothic architecture in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
  • physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
  • physiologic jaundice — a transitory jaundice that affects some infants for the first few days after birth.
  • portuguese water dog — one of a breed of medium-sized dogs originally developed to assist Portuguese fishermen and having a profuse black or brown coat with or without white markings and webbed feet.
  • postgraduate student — a student who has obtained a degree from a university, etc, and is pursuing studies for a more advanced qualification
  • potassium dichromate — an orange-red crystalline soluble solid substance that is a good oxidizing agent and is used in making chrome pigments and as a bleaching agent. Formula: K2Cr2O7
  • pound cost averaging — a method of accumulating capital by investing a fixed sum in a particular security at regular intervals, in order to achieve an average purchase price below the arithmetic average of the market prices on the purchase dates
  • 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.
  • 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
  • production agreement — a contract concerning the production or manufacture of something
  • prohibited substance — a substance, such as a drug, etc, that is banned or forbidden by law or other authority
  • pseudo-psychological — of or relating to psychology.
  • pseudoparenchymatous — (in certain fungi and red algae) a compact mass of tissue, made up of interwoven hyphae or filaments, that superficially resembles plant tissue.
  • public administrator — an official of a city, county, or state government.
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