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

  • mechanical drawing — drawing, as of machinery, done with the aid of rulers, scales, compasses, etc.
  • mechanical testing — Mechanical testing is the testing of a material to find out its mechanical properties, for example its yield strength or hardness.
  • median lethal dose — the quantity of a lethal substance, as a poison or pathogen, or of ionizing radiation that will kill 50 percent of the organisms subjected to it in a specified time period. Symbol: LD 5 0.
  • medical technician — a person, not a qualified doctor, who does practical work in a hospital
  • medium of exchange — anything generally accepted as representing a standard of value and exchangeable for goods or services.
  • menthol cigarettes — cigarettes that are flavoured with menthol
  • merchant of venice — a comedy (1596?) by Shakespeare.
  • mergui archipelago — a group of over 200 islands in the Andaman Sea, off the Tenasserim coast of S Myanmar: mountainous and forested
  • metacentric height — the distance between the center of gravity and the metacenter of a floating body, as of a vessel.
  • metamorphic facies — Geology. a group of metamorphic rock units characterized by particular mineralogic associations.
  • methacrylate resin — an acrylic resin formed by polymerizing the esters or amides of methacrylic acid.
  • methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
  • microsoft exchange — (messaging)   Microsoft's messaging and enterprise collaboration server. Exchange's primary role is as an electronic mail message store but it can also store calendars, task lists, contact details, and other data.
  • middle high german — the High German language of the period 1100–1500. Abbreviation: MHG.
  • middle paleolithic — See under Paleolithic.
  • middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
  • miniature pinscher — one of a German breed of toy dogs resembling a smaller version of the Doberman pinscher, having a flat skull, a smooth coat, erect ears, and a docked tail, bred originally as a watchdog.
  • minister of health — a person appointed to head the government department of health
  • moccasin telegraph — the transmission of rumour or secret information; the grapevine
  • modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
  • mohammed ibn-kasim — flourished early 8th century a.d, Muslim conqueror of the Sind region in India.
  • monographic series — a series of monographs issued in uniform style or format and related by subject or by issuing agency.
  • morphine addiction — the fact or condition of being addicted to morphine
  • mount saint helens — a city in Merseyside, in NW England, near Liverpool.
  • mozambique channel — a channel in SE Africa, between Mozambique and Madagascar. 950 miles (1530 km) long; 250–550 miles (400–885 km) wide.
  • mucopolysaccharide — (formerly) glycosaminoglycan.
  • multimedia machine — machines that allow users to control and manipulate sound, video, text and graphics
  • nailed to the wall — [like a trophy] Said of a bug finally eliminated after protracted, and even heroic, effort.
  • naval architecture — the science of designing ships and other waterborne craft.
  • nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
  • negative cash flow — the situation when income is less than payments
  • neighborhood watch — a neighborhood surveillance program or group in which residents keep watch over one another's houses, patrol the streets, etc., in an attempt to prevent crime.
  • neo-pythagoreanism — a philosophical system, established in Alexandria and Rome in the second century b.c., consisting mainly of revived Pythagorean doctrines with elements of Platonism and Stoicism.
  • nervous exhaustion — extreme mental and physical fatigue caused by excessive emotional stress; neurasthenia.
  • netherlands guiana — a former name of Suriname.
  • neurophysiological — the branch of physiology dealing with the functions of the nervous system.
  • neuropsychodynamic — Of or pertaining to neuropsychodynamics.
  • neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
  • nightmare scenario — If you describe a situation or event as a nightmare scenario, you mean that it is the worst possible thing that could happen.
  • nike of samothrace — a Greek marble statue (c200 b.c.) of Nike found at Samothrace and now in the Louvre, Paris.
  • no laughing matter — sth serious
  • non-characteristic — Also, characteristical. pertaining to, constituting, or indicating the character or peculiar quality of a person or thing; typical; distinctive: Red and gold are the characteristic colors of autumn.
  • nonachlorobiphenyl — (organic compound) Either of three isomers of the polychlorinated biphenyl containing nine chlorine atoms.
  • noninterchangeable — That cannot be interchanged with another.
  • north polar region — the region of land and water surrounding the North Pole.
  • northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
  • norwegian elkhound — one of a breed of dogs having a short, compact body, short, pointed ears, and a thick, gray coat, raised originally in Norway for hunting elk and other game.
  • not a hope in hell — If you say that someone has not got a hope in hell of doing something, you are emphasizing that they will not be able to do it.
  • not a pretty sight — If you say that someone or something is not a pretty sight, you mean that it is not pleasant to look at.
  • oath of allegiance — pledge to one's nation
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