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18-letter words containing a, l, t, h, e

  • lagrange's theorem — the theorem that the order of each subgroup of a finite group is a factor of the order of the group.
  • lake pontchartrain — a shallow lagoon in SE Louisiana, linked with the Gulf of Mexico by a narrow channel, the Rigolets: resort and fishing centre. Area: 1620 sq km (625 sq miles)
  • lambeth conference — a convention of the bishops of the Anglican communion, held about every 10 years at Lambeth Palace to confer but not to define doctrine or to legislate on ecclesiastical matters.
  • last chance saloon — a place frequented by unsavoury or contemptible people
  • lay at the door of — to blame (a person) for
  • lay it on the line — a mark or stroke long in proportion to its breadth, made with a pen, pencil, tool, etc., on a surface: a line down the middle of the page.
  • leatherback turtle — a sea turtle, Dermochelys coriacea, having the shell embedded in a leathery skin, reaching a length of more than 7 feet (2.1 meter) and a weight of more than 1000 pounds (450 kg): the largest living sea turtle; an endangered species.
  • leave in the lurch — a situation at the close of various games in which the loser scores nothing or is far behind the opponent.
  • leave sth too late — If you leave something too late, you delay doing it so that when you eventually do it, it is useless or ineffective.
  • legislative branch — the branch of government having the power to make laws; the legislature.
  • lesser whitethroat — an Old World warbler, Sylvia curruca, having a greyish-brown plumage with a white throat and underparts
  • light displacement — the weight of a ship with all its permanent equipment, excluding the weight of cargo, persons, ballast, dunnage, and fuel, but usually including the weight of permanent ballast and water used to operate steam machinery.
  • lighting cameraman — the person who designs and supervises the lighting of scenes to be filmed
  • lightning arrester — a device for preventing damage to radio, telephonic, or other electric equipment from lightning or other high-voltage currents, using spark gaps to carry the current to the ground without passing through the device.
  • lily of the valley — a plant, Convallaria majalis, having an elongated cluster of small, drooping, bell-shaped, fragrant white flowers.
  • liqueur chocolates — chocolates containing liqueur
  • literae humaniores — (at Oxford University) the faculty concerned with Greek and Latin literature, ancient history, and philosophy; classics
  • logical shift left — logical shift
  • lonely hearts club — a club for people who are trying to find a lover or a friend
  • look the other way — look in the opposite direction
  • lower klamath lake — See under Klamath Lakes.
  • lower palaeolithic — the earliest of the three sections of the Palaeolithic, beginning about 3 million years ago and ending about 70 000 bc with the emergence of Neanderthal man
  • magnetorheological — (physics) describing a substance whose rheological properties are modified by a magnetic field.
  • make a meal of sth — If you think someone is taking more time and energy to do something than is necessary, you can say that they are making a meal of it.
  • malpighian tubules — one of a group of long, slender excretory tubules at the anterior end of the hindgut in insects and other terrestrial arthropods.
  • materials handling — the loading, unloading, and movement of goods, as within a factory or warehouse, especially by the aid of mechanical devices.
  • maternity hospital — birthing facility
  • mathematical error — a mistake in a mathematical calculation, etc
  • mathematical logic — symbolic logic.
  • mathematical model — a representation of a system, process, etc, in mathematical terms
  • matthias schleiden — Matthias Jakob [mah-tee-ahs yah-kawp] /mɑˈti ɑs ˈyɑ kɔp/ (Show IPA), 1804–81, German botanist.
  • 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
  • mental health care — services devoted to the treatment of mental illnesses and the improvement of mental health in people with mental disorders or problems
  • menthol cigarettes — cigarettes that are flavoured with menthol
  • methacrylate resin — an acrylic resin formed by polymerizing the esters or amides of methacrylic acid.
  • methyl transferase — any of a class of enzymes that catalyze the transfer of methyl groups from one molecule to another.
  • methylated spirits — ethyl alcohol denatured with methyl alcohol for the purpose of preventing its use as an alcoholic beverage.
  • methylcyclohexanol — a colorless, aromatic, viscous liquid mixture, chiefly of the ortho and para forms of CH 3 C 6 H 1 0 OH, derived from cresol by hydrogenation: used chiefly as a solvent for rubber, cellulose, esters, and phenols.
  • middle paleolithic — See under Paleolithic.
  • middle-of-the-road — favoring, following, or characterized by an intermediate position between two extremes, especially in politics; moderate.
  • 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).
  • monophosphorylated — (biochemistry) phosphorylated with a single unit of phosphoric acid.
  • monte carlo method — a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer.
  • mount saint helens — a city in Merseyside, in NW England, near Liverpool.
  • move the goalposts — to change the aims of an activity to ensure the desired results
  • multimedia machine — machines that allow users to control and manipulate sound, video, text and graphics
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