17-letter words containing t, i, e, r, d
- mean-spiritedness — the quality of being mean-spirited
- mediterranean sea — a sea surrounded by Africa, Europe, and Asia. 2400 miles (3865 km) long; 1,145,000 sq. mi. (2,965,550 sq. km); greatest known depth 14,436 feet (4400 meters).
- mentally impaired — with reduced or weakened mental capacity
- metaperiodic acid — the crystalline compound HIO4, an oxyacid of iodine
- methylidyne group — the trivalent group ≡CH.
- microdensitometer — a densitometer for measuring the density of minute areas of photographic negatives.
- 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.
- mid-level network — (Or "regional network"). The kind of networks which make up the second level of the Internet hierarchy. They are the transit networks which connect the stub networks to the backbone networks.
- midterm elections — elections held halfway through the term of office of a president during which governors, etc, but not a president, are elected
- 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.
- minister resident — a diplomatic agent serving in a minor country and ranking next below an ambassador.
- misunderstandable — Capable of being misunderstood.
- misunderstandings — Plural form of misunderstanding.
- modest mussorgski — Modest Petrovich [moh-dest pi-troh-vich;; Russian muh-dyest pyi-traw-vyich] /moʊˈdɛst pɪˈtroʊ vɪtʃ;; Russian mʌˈdyɛst pyɪˈtrɔ vyɪtʃ/ (Show IPA), Moussorgsky, Modest Petrovich.
- modulo arithmetic — modular arithmetic
- montessori method — a system for teaching young children, in which the fundamental aim is self-motivated education by the children themselves, as they are encouraged to move freely through individualized instruction and physical exercises, accompanied by special emphasis on the training of the senses and the early development of reading and writing skills.
- 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.
- musical interlude — an interval in a play, event or occasion during which music is played
- 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.
- 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.
- nitrogen peroxide — the equilibrium mixture of nitrogen dioxide and dinitrogen tetroxide
- 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.
- nonproductiveness — The quality of being nonproductive.
- north frigid zone — the part of the earth's surface between the Arctic Circle and the North Pole.
- northern rhodesia — former name of Zambia.
- northern studfish — See under studfish.
- 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.
- nursery education — education provided at a school for young children, usually from three to five years old
- object identifier — (programming) (OID) Generally an implementation-specific integer or pointer that uniquely identifies an object.
- odds-on favourite — a person, team, horse, etc that is regarded as the most likely to win a competition
- 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.
- 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 lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
- oyer and terminer — (in some U.S. states) any of various higher criminal courts.
- painted greenling — a greenling, Oxylebius pictus, inhabiting the Pacific coastal waters of North America, having a whitish body marked with black bands.
- parathyroidectomy — the excision of a parathyroid gland.
- paratyphoid fever — Also called paratyphoid fever. an infectious disease, similar in some of its symptoms to typhoid fever but usually milder, caused by any of several bacilli of the genus Salmonella other than S. typhi.