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15-letter words containing u, n, i, s, y

  • nyquist theorem — (communications)   A theorem stating that when an analogue waveform is digitised, only the frequencies in the waveform below half the sampling frequency will be recorded. In order to reconstruct (interpolate) a signal from a sequence of samples, sufficient samples must be recorded to capture the peaks and troughs of the original waveform. If a waveform is sampled at less than twice its frequency the reconstructed waveform will effectively contribute only noise. This phenomenon is called "aliasing" (the high frequencies are "under an alias"). This is why the best digital audio is sampled at 44,000 Hz - twice the average upper limit of human hearing. The Nyquist Theorem is not specific to digitised signals (represented by discrete amplitude levels) but applies to any sampled signal (represented by discrete time values), not just sound.
  • open university — higher education by correspondence
  • ornithorhynchus — the platypus.
  • pearly nautilus — nautilus (def 1).
  • personal injury — injury to an individual
  • plane surveying — the surveying of areas of limited size, making no corrections for the earth's curvature
  • platitudinously — in a platitudinal manner
  • plunket society — the Royal New Zealand Society for the Health of Women and Children
  • policy issuance — Policy issuance is the process of creating an insurance policy and providing it to the policyholder.
  • polyisobutylene — a polymer of isobutylene, used chiefly in the manufacture of synthetic rubber.
  • postulationally — in a postulational manner
  • primary insurer — A primary insurer is the insurance company that first sells insurance to a client, who later purchases reinsurance.
  • publicity stunt — something done to attract publicity
  • purslane family — the plant family Portulacaceae, characterized by chiefly herbaceous plants having simple, often fleshy leaves, sometimes showy flowers, and capsular fruit, and including bitterroot, purslane, red maids, rose moss, and spring beauty.
  • pusillanimously — lacking courage or resolution; cowardly; faint-hearted; timid.
  • queen's highway — king's highway.
  • query expansion — (information science)   Adding search terms to a user's search. Query expansion is the process of a search engine adding search terms to a user's weighted search. The intent is to improve precision and/or recall. The additional terms may be taken from a thesaurus. For example a search for "car" may be expanded to: car cars auto autos automobile automobiles. The additional terms may also be taken from documents that the user has specified as being relevant; this is the basis for the "more like this" feature of some search engines. The extra terms can have positive or negative weights.
  • questionability — of doubtful propriety, honesty, morality, respectability, etc.: questionable activities; in questionable taste.
  • radio sono-buoy — a buoy equipped to detect underwater noises and transmit them by radio
  • ranfurly shield — (in New Zealand) the premier rugby trophy, competed for annually by provincial teams
  • ray of sunshine — beam of sunlight
  • ready-furnished — (of a room, house, office, etc) fitted with furniture before being rented or sold
  • resurrectionary — pertaining to or of the nature of resurrection.
  • rocky mountains — mountain range in USA and Canada
  • rogation sunday — the fifth Sunday after Easter; it sees the start of the supplications that are continued during the following Monday, Tuesday and Wednesday
  • rubaiyat stanza — a quatrain patterned after those in The Rubáiyát of Omar Khayyám, of iambic pentameter and rhyming aaba.
  • run-time system — (programming)   (RTS, run-time support, run-time) Library code and processes which support software written in a particular language running on a particular platform. The RTS typically deals with details of the interface between the program and the operating system such as system calls, program start-up and termination, and memory management.
  • salisbury plain — a plateau in S England, N of Salisbury: the site of Stonehenge.
  • sayan mountains — a mountain range in S central Russia, in S Siberia. Highest peak: Munku-Sardyk, 3437 m (11 457 ft)
  • self-justifying — offering excuses for oneself, especially in excess of normal demands.
  • semidocumentary — a film or television programme that is fictional but includes many factual events or details
  • serendipitously — come upon or found by accident; fortuitous: serendipitous scientific discoveries.
  • sesquicentenary — a hundred and fiftieth anniversary
  • single currency — a currency that is common to different countries
  • sleeping beauty — a beautiful princess, the heroine of a popular fairy tale, awakened from a charmed sleep by the kiss of the prince who is her true love.
  • slumpflationary — of or relating to slumpflation
  • smoky mountains — Great Smoky Mountains
  • snowy mountains — a mountain range in SE Australia, part of the Australian Alps: famous hydroelectric scheme
  • soul-destroying — Activities or situations that are soul-destroying make you depressed, because they are boring or because there is no hope of improvement.
  • sound symbolism — a nonarbitrary connection between phonetic features of linguistic items and their meanings, as in the frequent occurrence of close vowels in words denoting smallness, as petite and teeny-weeny.
  • spiny cocklebur — a cocklebur, Xanthium spinosum, introduced into North America from Europe.
  • squirrel monkey — either of two small, long-tailed monkeys, Saimiri oerstedii of Central America and S. sciureus of South America, having a small white face with black muzzle and gold, brown, or greenish fur: S. oerstedii is endangered.
  • subsidiary coin — a coin, especially one made of silver, having a value less than that of the monetary unit.
  • substitutionary — a person or thing acting or serving in place of another.
  • succinylcholine — a drug, C14H30N2O4, used primarily as a muscle relaxant, produced by the esterization of succinic acid with choline
  • sulphinpyrazone — a uricosuric drug with molecular formula C23H20N2O3S, used in the treatment of chronic gout
  • sunset industry — any industry that holds little promise of future development
  • superefficiency — the quality or condition of being superefficient
  • superintendency — a district or place under a superintendent.
  • supernaturality — the quality or state of being supernatural; supernaturalism.
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