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17-letter words containing n, d, o, u

  • liberal education — an education based primarily on the liberal arts, emphasizing the development of intellectual abilities as opposed to the acquisition of professional skills.
  • lick one's wounds — an injury, usually involving division of tissue or rupture of the integument or mucous membrane, due to external violence or some mechanical agency rather than disease.
  • line of induction — (formerly) a line of force in a magnetic field.
  • line of longitude — an imaginary line on a globe, map, etc, indicating longitude
  • liquid propellant — a rocket propellant in liquid form.
  • liquidity cushion — a reserve fund of assets held by a company or person
  • long island sound — an arm of the Atlantic between Connecticut and Long Island. 90 miles (145 km) long.
  • longitudinal wave — a wave in which the direction of displacement is the same as the direction of propagation, as a sound wave.
  • magellanic clouds — either of two irregular galactic clusters in the southern heavens that are the nearest independent star system to the Milky Way.
  • manitoulin island — an island in N Lake Huron belonging to Canada. 80 miles (130 km) long.
  • manufactured home — a prefabricated house, assembled in modular sections.
  • many-valued logic — the study of logical systems in which the truth-values that a proposition may have are not restricted to two, representing only truth and falsity
  • medulla oblongata — the lowest or hindmost part of the brain, continuous with the spinal cord.
  • memoised function — memo function
  • memoized function — memo function
  • methylidyne group — the trivalent group ≡CH.
  • microencapsulated — Encapsulated using microencapsulation.
  • microminiaturized — Simple past tense and past participle of microminiaturize.
  • microreproduction — a photographic image too small to be read by the unaided eye.
  • mississippi sound — an arm of the Gulf of Mexico, extending from Lake Borgne, SE Louisiana, to Mobile Bay, SW Alabama: part of the Intracoastal Waterway. About 100 miles (160 km) long.
  • modeling language — modelling language
  • money-market fund — a mutual fund that invests in the money market.
  • monkeygland sauce — a piquant sauce, made from tomatoes, ketchup, fruit chutney, garlic, spices, etc
  • mounted policeman — policemen who patrol on horseback
  • multi-directional — extending or operating in several directions at the same time; functioning or going in more than one direction: a multidirectional stereo speaker system.
  • multitudinousness — The state or condition of being multitudinous.
  • mundane astrology — the astrology of worldly events, in contrast to the astrology of the individual: used especially in interpretations and forecasts involving politics, the stock market, weather, and disasters.
  • narrow-shouldered — having shoulders which do not extend very far from the neck; not broad-shouldered
  • nasolacrimal duct — a membranous canal extending from the lacrimal sac to the nasal cavity, through which tears are discharged into the nose.
  • natural deduction — (logic)   A set of rules expressing how valid proofs may be constructed in predicate logic. In the traditional notation, a horizontal line separates premises (above) from conclusions (below). Vertical ellipsis (dots) stand for a series of applications of the rules. "T" is the constant "true" and "F" is the constant "false" (sometimes written with a LaTeX \perp). "^" is the AND (conjunction) operator, "v" is the inclusive OR (disjunction) operator and "/" is NOT (negation or complement, normally written with a LaTeX \neg). P, Q, P1, P2, etc. stand for propositions such as "Socrates was a man". P[x] is a proposition possibly containing instances of the variable x, e.g. "x can fly". A proof (a sequence of applications of the rules) may be enclosed in a box. A boxed proof produces conclusions that are only valid given the assumptions made inside the box, however, the proof demonstrates certain relationships which are valid outside the box. For example, the box below labelled "Implication introduction" starts by assuming P, which need not be a true proposition so long as it can be used to derive Q. Truth introduction: - T (Truth is free). Binary AND introduction: ----------- | . | . | | . | . | | Q1 | Q2 | ----------- Q1 ^ Q2 (If we can derive both Q1 and Q2 then Q1^Q2 is true). N-ary AND introduction: ---------------- | . | .. | . | | . | .. | . | | Q1 | .. | Qn | ---------------- Q1^..^Qi^..^Qn Other n-ary rules follow the binary versions similarly. Quantified AND introduction: --------- | x . | | . | | Q[x] | --------- For all x . Q[x] (If we can prove Q for arbitrary x then Q is true for all x). Falsity elimination: F - Q (Falsity opens the floodgates). OR elimination: P1 v P2 ----------- | P1 | P2 | | . | . | | . | . | | Q | Q | ----------- Q (Given P1 v P2, if Q follows from both then Q is true). Exists elimination: Exists x . P[x] ----------- | x P[x] | | . | | . | | Q | ----------- Q (If Q follows from P[x] for arbitrary x and such an x exists then Q is true). OR introduction 1: P1 ------- P1 v P2 (If P1 is true then P1 OR anything is true). OR introduction 2: P2 ------- P1 v P2 (If P2 is true then anything OR P2 is true). Similar symmetries apply to ^ rules. Exists introduction: P[a] ------------- Exists x.P[x] (If P is true for "a" then it is true for all x). AND elimination 1: P1 ^ P2 ------- P1 (If P1 and P2 are true then P1 is true). For all elimination: For all x . P[x] ---------------- P[a] (If P is true for all x then it is true for "a"). For all implication introduction: ----------- | x P[x] | | . | | . | | Q[x] | ----------- For all x . P[x] -> Q[x] (If Q follows from P for arbitrary x then Q follows from P for all x). Implication introduction: ----- | P | | . | | . | | Q | ----- P -> Q (If Q follows from P then P implies Q). NOT introduction: ----- | P | | . | | . | | F | ----- / P (If falsity follows from P then P is false). NOT-NOT: //P --- P (If it is not the case that P is not true then P is true). For all implies exists: P[a] For all x . P[x] -> Q[x] ------------------------------- Q[a] (If P is true for given "a" and P implies Q for all x then Q is true for a). Implication elimination, modus ponens: P P -> Q ---------- Q (If P and P implies Q then Q). NOT elimination, contradiction: P /P ------ F (If P is true and P is not true then false is true).
  • nervous breakdown — (not in technical use) any disabling mental disorder requiring treatment.
  • neurodegenerative — Resulting in or characterized by degeneration of the nervous system, especially the neurons in the brain.
  • newfoundland time — a form of civil time observed on the island of Newfoundland, one and one-half hours later than Eastern time and a half hour later than Atlantic time.
  • non-subordination — the act of placing in a lower rank or position: The refusal to allow women to be educated was part of society's subordination of women to men.
  • nonproductiveness — The quality of being nonproductive.
  • nonunderstandable — Not understandable.
  • northern studfish — See under studfish.
  • not the full quid — mentally subnormal
  • not to be outdone — You use not to be outdone to introduce an action which someone takes in response to a previous action.
  • noun pre-modifier — a noun that occurs before and modifies another noun, as toy in toy store or tour in tour group.
  • nuclear radiation — Physics. radiation in the form of elementary particles emitted by an atomic nucleus, as alpha rays or gamma rays, produced by decay of radioactive substances or by nuclear fission.
  • nuclear threshold — the point in war at which a combatant brings nuclear weapons into use
  • number three wood — spoon (def 5).
  • nursery education — education provided at a school for young children, usually from three to five years old
  • odds-on favourite — a person, team, horse, etc that is regarded as the most likely to win a competition
  • odour of sanctity — sanctimoniousness
  • off duty, on duty — If someone such as a policeman or a nurse is off duty, they are not working. If someone is on duty, they are working.
  • old south arabian — a group of four closely related Semitic languages, having a writing system and used from about the eighth to the fifth centuries b.c. in the southern part of Arabia.
  • on (or off) duty — at (or temporarily relieved from) one's work, duty, etc.
  • on second thought — Often, second thoughts. reservation about a previous action, position, decision, judgment, or the like: He had second thoughts about his decision.
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