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18-letter words containing a, h, i, g

  • ophthalmologically — In an ophthalmological manner.
  • optical brightener — an additive that dyes and brightens fabric or paper
  • organization chart — a diagrammatic representation showing how departments or divisions in an organization, as a large corporation, are related to one another along lines of authority.
  • orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
  • oscillographically — By means of oscillography.
  • overnight telegram — a type of domestic telegram sent at a reduced rate with a minimum charge for 10 words or less and accepted until midnight for delivery the following day.
  • palmer archipelago — a group of islands in the South Atlantic Ocean, off the NW coast of the Antarctic Peninsula.
  • parachute regiment — an airborne regiment of an army
  • 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.
  • pemphigus vulgaris — a potentially fatal blistering skin disease, characterized by large blisters on the skin, mucous membranes of the mouth, genitals, intestines, etc, which eventually rupture and form painful denuded areas from which critical amounts of bodily protein, fluid, and blood may be lost
  • 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).
  • photochemical smog — air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust.
  • physical geography — the branch of geography concerned with natural features and phenomena of the earth's surface, as landforms, drainage features, climates, soils, and vegetation.
  • phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
  • pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
  • plains grasshopper — a large, destructive short-horned grasshopper, Brachystola magna, of the western U.S., marked by pinkish hind wings.
  • positively charged — having a positive charge
  • prerelease showing — a showing of a film before it goes on general release
  • propaganda machine — the group of people, publications, etc, such as of a government, country etc, responsible for the organized dissemination of information, allegations, etc, to assist or damage the cause of a government, movement, etc
  • proprietary rights — rights of ownership
  • psychopathological — the science or study of mental disorders.
  • psychosociological — psychological and sociological
  • publishing company — a firm which publishes books
  • punishment beating — a form of corporal punishment carried out by a paramilitary organization on a member of another sectarian organization, usually in Northern Ireland
  • purchasing officer — the member of staff in an organization who is responsible for buying goods or products
  • pygmy hippopotamus — a small hippopotamus, Choeropsis liberiensis, of forests and swamps in western Africa.
  • rear its ugly head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
  • registered charity — official aid organization
  • resistance fighter — someone who fights (for freedom, etc) against an invader in an occupied country, or against their government, etc, often secretly or illegally
  • rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
  • richard p. gabriel — Richard Gabriel
  • right-to-work laws — a state law making it illegal to refuse employment to a person for the sole reason that he or she is not a union member.
  • say/kiss goodnight — If you say goodnight to someone or kiss them goodnight, you say something such as 'Goodnight' to them or kiss them before one of you goes home or goes to sleep.
  • school-leaving age — the minimum age that children are legally allowed to leave school - in Britain and the United States, this is 16
  • shape-note singing — a traditional style of a capella singing using shape-note notation.
  • shipping container — a large, strong container, usually of metal, used to store goods in during shipment
  • shugart associates — (company)   The disk drive company, founded by Alan F. Shugart, which developed SCSI. Alan left Shugart Associates in 1974 [did he quit or was he fired?]. Shugart Associates was bought, and eventually shut down by Xerox.
  • shunting operation — an operation in which rail coaches are manoeuvred
  • sign of the zodiac — one of the twelve constellations along the path of the ecliptic.
  • snake in the grass — a treacherous person, especially one who feigns friendship.
  • sociopsychological — of, relating to, or characterized by interrelated social and psychological factors.
  • sociotechnological — of, relating to, or signifying the combination or interaction of social and technological factors.
  • soft touch sealing — Soft touch sealing is a copolymer seal for a tank, with characteristics designed for softness, used instead of a metal seal to help avoid fire when sparks are generated.
  • solemn (high) mass — a highly ceremonial Mass with parts of the text sung by the celebrant, with a deacon and subdeacon assisting at the ceremonies, and with choir singing and organ music
  • solid-fuel heating — heating that uses solid fuel, such as coal or coke
  • something to spare — a surplus of something
  • spaghetti junction — an interchange, usually between motorways, in which there are a large number of underpasses and overpasses and intersecting roads used by a large volume of high-speed traffic
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