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17-letter words containing d, e, a, t, r

  • mentally impaired — with reduced or weakened mental capacity
  • merchant of death — a company, nation, or person that sells military arms on the international market, usually to the highest bidder and without scruple or regard for political ramifications.
  • metaperiodic acid — the crystalline compound HIO4, an oxyacid of iodine
  • microencapsulated — Encapsulated using microencapsulation.
  • microminiaturized — Simple past tense and past participle of microminiaturize.
  • mileage indicator — a device on a vehicle such as a car, plane, etc which indicates the number of miles travelled
  • minas de riotinto — a town in SW Spain: copper mines.
  • mineralocorticoid — Biochemistry. any of a group of corticosteroid hormones, synthesized by the adrenal cortex, that regulate the excretion or reabsorption of sodium and potassium by the kidneys, salivary glands, and sweat glands.
  • misunderstandable — Capable of being misunderstood.
  • misunderstandings — Plural form of misunderstanding.
  • mode of transport — means of travel
  • modern pentathlon — an athletic contest consisting of five different events: horse riding with jumps, fencing with electric épée, freestyle swimming, pistol shooting, and cross-country running
  • modulo arithmetic — modular arithmetic
  • mom and pop store — a small retail business, typically family-operated
  • money-market fund — a mutual fund that invests in the money market.
  • monkey bread tree — a bombacaceous tree, Adansonia digitata, native to Africa, that has a very thick trunk, large white flowers, and a gourdlike fruit with an edible pulp called monkey bread
  • 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.
  • 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.
  • musical interlude — an interval in a play, event or occasion during which music is played
  • mustard and cress — Mustard and cress is very young mustard plants and cress plants grown together and eaten in salad.
  • naked singularity — an infinitely dense point mass without a surrounding black hole
  • 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).
  • neurodegenerative — Resulting in or characterized by degeneration of the nervous system, especially the neurons in the brain.
  • new england aster — a tall composite plant, Aster novae-angliae, of the northeastern U.S., the flowers of which have lavender to deep-purple rays.
  • new scotland yard — See under Scotland Yard (def 1).
  • ninety-day wonder — an officer commissioned in a branch of the armed forces after an unusually short training period, especially after a three-months officers' training course during World War II.
  • non-consideration — the act of considering; careful thought; meditation; deliberation: I will give your project full consideration.
  • non-containerized — to package (freight) in uniform, sealed containers for shipment.
  • non-demonstrative — characterized by or given to open exhibition or expression of one's emotions, attitudes, etc., especially of love or affection: She wished her fiancé were more demonstrative.
  • non-discretionary — subject or left to one's own discretion.
  • nonunderstandable — Not understandable.
  • nord-ostsee kanal — German name of Kiel Canal.
  • northern rhodesia — former name of Zambia.
  • northern sporades — a group of Greek islands in the Aegean, lying northeast of Euboea
  • nuclear deterrent — a country's nuclear weapons viewed as a deterrent to other countries from attacking
  • 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
  • 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
  • old red sandstone — a thick sequence of sedimentary rock (generally, but not always, red) deposited in Britain and NW Europe during the Devonian period
  • on the barrelhead — upon being presented for sale; at the time of delivery
  • on the other hand — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
  • one-time password — (security)   (OTP) A security system that requires a new password every time a user authenticates themselves, thus protecting against an intruder replaying an intercepted password. OTP generates passwords using either the MD4 or MD5 hashing algorithms. The equivalent term "S/Key", developed by Bellcore, is a trademark of Telcordia Technologies, so the name OTP is used increasingly. See RFC 1760 - "The S/KEY One-Time Password System" and RFC 1938 - "A One-Time Password System".
  • online dictionary — a dictionary that is available on the Internet or World Wide Web and accessed through a Web browser using a computer or a mobile device, primarily by typing a query term into a search box on the site. Online dictionaries like Dictionary.com offer immediate, direct access through large databases to a word's spelling and meanings, plus a host of ancillary information, including its variant spellings, pronunciation, inflected forms, origin, and derived forms, as well as supplementary notes on matters of interest or concern about how the word is used: Some people think online dictionaries will make print dictionaries obsolete.
  • open-end mortgage — a mortgage agreement against which new sums of money may be borrowed under certain conditions.
  • organized ferment — ferment (def 1).
  • organized militia — a former military organization functioning under both state and federal authority.
  • outside broadcast — An outside broadcast is a radio or television programme that is not recorded or filmed in a studio, but in another building or in the open air.
  • overdetermination — the concept that a single emotional symptom or event, as a dream or a slip of the tongue, may be caused by more than one factor.
  • overhead camshaft — a camshaft in an automotive engine that is located in the cylinder head over the engine block rather than in the block. Abbreviation: OHC.
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