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20-letter words containing m, e, r, t

  • asymmetrical warfare — warfare between a powerful military force and a weak guerilla force
  • at someone's service — ready to serve or cooperate with someone
  • atmospheric pressure — Atmospheric pressure is the pressure of the atmosphere on the Earth's surface.
  • attachment parenting — a style of child rearing aimed at developing a strong emotional bond between the child and primary caregiver. See also attachment (def 3a).
  • automobile insurance — Automobile insurance is insurance coverage for cars.
  • axiomatic set theory — (theory)   One of several approaches to set theory, consisting of a formal language for talking about sets and a collection of axioms describing how they behave. There are many different axiomatisations for set theory. Each takes a slightly different approach to the problem of finding a theory that captures as much as possible of the intuitive idea of what a set is, while avoiding the paradoxes that result from accepting all of it, the most famous being Russell's paradox. The main source of trouble in naive set theory is the idea that you can specify a set by saying whether each object in the universe is in the "set" or not. Accordingly, the most important differences between different axiomatisations of set theory concern the restrictions they place on this idea (known as "comprehension"). NBG (von Neumann-Bernays-Goedel) set theory sort of allows comprehension for all formulae without restriction, but distinguishes between two kinds of set, so that the sets produced by applying comprehension are only second-class sets. NBG is exactly as powerful as ZF, in the sense that any statement that can be formalised in both theories is a theorem of ZF if and only if it is a theorem of ZFC. MK (Morse-Kelley) set theory is a strengthened version of NBG, with a simpler axiom system. It is strictly stronger than NBG, and it is possible that NBG might be consistent but MK inconsistent. ML ("Modern Logic") is to NF as NBG is to ZF. (Its name derives from the title of the book in which Quine introduced an early, defective, form of it). It is stronger than ZF (it can prove things that ZF can't), but if NF is consistent then ML is too.
  • baccalaureate sermon — a farewell sermon addressed to a graduating class in some U.S. colleges and schools.
  • backwards compatible — backward compatibility
  • baggage storage room — A baggage storage room is a room in a hotel where people can leave their baggage in order to collect it later.
  • baptism for the dead — the baptism of a living person in the place of and for the sake of one who has died unbaptized: now practiced chiefly by Mormons.
  • barothermohygrograph — an automatic instrument for recording pressure, temperature, and humidity.
  • bartramian sandpiper — upland sandpiper.
  • basal metabolic rate — the rate at which heat is produced by the body at rest, 12 to 14 hours after eating, measured in kilocalories per square metre of body surface per hour
  • be for the high jump — to be liable to receive a severe reprimand or punishment
  • be getting somewhere — If you say that you are getting somewhere, you mean that you are making progress towards achieving something.
  • be in the market for — to wish to buy or acquire
  • be there for someone — If someone is there for you, they help and support you, especially when you have problems.
  • beaverhead mountains — a mountain range on the border of E Idaho and SW Montana, in the Bitterroot Range. 10,961 feet (3343 meters).
  • benavente y martinez — Jacinto. 1866–1954, Spanish dramatist and critic, who wrote over 150 plays. Nobel prize for literature 1922
  • benoit b. mandelbrot — Benoit Mandelbrot
  • benztropine mesylate — a synthetic anticholinergic, C 21 H 25 NO⋅CH 4 O 3 S, used in the treatment of Parkinson's disease.
  • benzyl isoamyl ether — a colorless liquid, C 12 H 18 O, used in soap perfumes.
  • bernese mountain dog — a strong sturdy dog of a breed with a bushy tail and a long silky black coat with reddish-brown and white markings, often used as a working farm dog
  • blast-furnace cement — a type of cement made from a blend of ordinary Portland cement and crushed slag from a blast furnace. It has lower setting properties than ordinary Portland cement
  • blue ridge mountains — a mountain range in the eastern US, extending from West Virginia into Georgia: part of the Appalachian mountains. Highest peak: Mount Mitchell, 2038 m (6684 ft)
  • bolometric magnitude — the magnitude of a star derived either from the total energy that it radiates at all wavelengths or from the total energy of those of its wavelengths that are received on earth.
  • bomb disposal expert — an expert in bomb disposal
  • bone mineral density — a measurement of the amount of calcium and other minerals in a segment of bone, a higher mineral content indicating a higher bone density and strength, used to detect osteoporosis or monitor its treatment.
  • bottom hole pressure — Bottom hole pressure is the pressure at the bottom of the hole, usually measured in pounds per square inch.
  • bottom of the barrel — poor quality
  • bottom-up processing — a processing technique, either in the brain or in a computer, in which incoming information is analysed in successive steps and later-stage processing does not affect processing in earlier stages
  • boy-meets-girl story — a film, book, etc whose plot is conventionally or trivially romantic
  • bring home the bacon — If you bring home the bacon, you achieve what you needed to achieve.
  • british thermal unit — a unit of heat in the fps system equal to the quantity of heat required to raise the temperature of 1 pound of water by 1°F. 1 British thermal unit is equivalent to 1055.06 joules or 251.997 calories
  • broaden o's/the mind — If an experience broadens your mind, it makes you more willing to accept other people's beliefs and customs.
  • buckminsterfullerene — a form of carbon that contains molecules having 60 carbon atoms arranged at the vertices of a polyhedron with hexagonal and pentagonal faces. It is produced in carbon arcs and occurs naturally in small amounts in certain minerals
  • buoyancy compensator — an inflatable vest used to control one's buoyancy underwater or to rest at the surface, usually having a connecting hose for inflation or deflation by mouth and a CO 2 cartridge for rapid, emergency inflation.
  • butterfly-shell clam — coquina.
  • calcium hypochlorite — a white, crystalline compound, Ca(OCl) 2 , used as a disinfectant and bleaching agent.
  • calcium permanganate — a violet, crystalline, deliquescent solid, Ca(MnO 4) 2 ⋅4H 2 O, used chiefly as a disinfectant and deodorizer.
  • care and maintenance — the state of a building, ship, machinery, etc, that is not in current use although it is kept in good condition to enable it to be quickly brought into service if there is demand for it
  • career limiting move — (jargon)   (CLM, Sun) Any action endangering one's future prospects of getting plum projects and raises, and possibly one's job. E.g. "His Halloween costume was a parody of his manager. He won the prize for "best CLM"." A severe bug discovered by a customer might be a "CLM bug".
  • catherine de medicis — (Caterina de' Medici) 1518–89, queen of Henry II of France (mother of Francis II, Charles IX, and Henry III).
  • catherine de' medici — 1519–89, queen of Henry II of France; mother of Francis II, Charles IX, and Henry III of France; regent of France (1560–74). She was largely responsible for the massacre of Protestants on Saint Bartholomew's Day (1572)
  • cavendish experiment — the experiment, conducted by Henry Cavendish, that determined the constant of gravitation by using a torsion balance and measuring the torsion produced by two masses placed at given distances from the masses on the balance.
  • charismatic movement — any of various groups, within existing denominations, that emphasize communal prayer and the charismatic gifts of speaking in tongues, healing, etc
  • chemical fingerprint — a distinctive characteristic or pattern indicating the presence of a certain molecule, used to identify a chemical.
  • chemolithoautotrophs — Plural form of chemolithoautotroph.
  • chemotherapeutically — By means of chemotherapy.
  • chevalier-montrachet — a white wine from Burgundy.
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