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18-letter words containing y, e, s, n, i

  • priority inversion — (parallel)   The state of a concurrent system where a high priority task is waiting for a low priority task which is waiting for a medium priority task. The system may become unstable and crash under these circumstances. In an operating system that uses multiple tasks, each task (or context) may be given a priority. These priorities help the scheduler decide which task to run next. Consider tasks, L, M, and H, with priorities Low, Medium, and High. M is running and H is blocked waiting for some resource that is held by L. So long as any task with a priority higher than L is runable, it will prevent task L, and thus task H, from running. Priority inversion is generally considered either as a high-level design failure or an implementation issue to be taken into account depending on who is talking. Most operating systems have methods in place to prevent or take inversion into account. Priority inheritance is one method. The most public instance of priority inversion is the repeated 'fail-safe' rebooting of the Mars Pathfinder. base station ('Sagan Memorial Station').
  • processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
  • property insurance — insurance coverage for land and housing
  • psychotechnologist — a specialist in psychotechnology
  • pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
  • pyramus and thisbe — (in Greek legend) two lovers of Babylon: Pyramus, wrongly supposing Thisbe to be dead, killed himself and she, encountering him in his death throes, did the same
  • quantity surveying — the action or profession of a person who estimates the cost of the materials and labour necessary for a construction job
  • queen's university — A Canadian University. Source of GVL, NIAL, Pasqual, Q'NIAL and TXL.
  • range of stability — the angle to the perpendicular through which a vessel may be heeled without losing the ability to right itself.
  • reduction strategy — (theory)   An algorithm for deciding which redex(es) to reduce next. Different strategies have different termination properties in the presence of recursive functions or values. See string reduction, normal order reduction, applicative order reduction, parallel reduction
  • reflection density — a measure of the extent to which a surface reflects light or other electromagnetic radiation, equal to the logarithm to base ten of the reciprocal of the reflectance
  • registered company — a company which has officially registered its business
  • reinsurance treaty — A reinsurance treaty is a contract that defines the terms of reinsurance business.
  • restoration comedy — English comedy of the period of the Restoration, stressing manners and social satire.
  • restriction enzyme — any of a group of enzymes that catalyze the cleavage of DNA molecules at specific sites: used for gene splicing in recombinant DNA technology and for chromosome mapping.
  • reversionary bonus — a bonus added to the sum payable on death or at the maturity of a with-profits assurance policy
  • revolutionary wars — American Revolution.
  • rotary clothesline — an apparatus of radiating spokes that support lines on which clothes are hung to dry
  • safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
  • saint george's day — April 23, celebrated in parts of the British Commonwealth in honor of the patron saint of Britain and especially in New Zealand as a bank holiday.
  • sampling frequency — sample rate
  • schwarz inequality — Also called Cauchy's inequality. the theorem that the inner product of two vectors is less than or equal to the product of the magnitudes of the vectors.
  • science dictionary — a specialized dictionary covering terms in the life, earth, and physical sciences, such as the online Science Dictionary on Dictionary.com. A science dictionary includes many technical terms with precise, specialized meanings—terms not normally found in general dictionaries—making it an invaluable resource for students and professionals in scientific fields.
  • secondary deviance — deviant behavior that results from being publicly labeled as deviant and treated as an outsider.
  • secondary diagonal — a diagonal line or plane.
  • secondary emission — the emission of electrons (secondary electrons) from a material that is bombarded with electrons or ions.
  • secondary industry — manufacturing, services, etc.
  • secondary offering — the sale of a large block of outstanding stock off the floor of an exchange, usually by a major stockholder.
  • secondary syphilis — the second stage of syphilis, characterized by eruptions of the skin and mucous membrane.
  • secretarial agency — a recruiting business which deals with jobs for secretaries
  • securities analyst — an expert who advises on investment in securities such as stocks, shares and bonds
  • security agreement — business: contract
  • security clearance — access to top secret information
  • security of tenure — (in Britain) the right of a tenant to continue to occupy a dwelling or site unless the landlord obtains a court order for possession of the property or termination of the tenancy agreement
  • self-contradictory — an act or instance of contradicting oneself or itself.
  • self-deprecatingly — in a self-deprecating manner
  • semi-microanalysis — any analytical method in which the weight of the sample is between 10 and 100 milligrams.
  • separation anxiety — the normal fear and apprehension expressed by infants when removed from their mothers or approached by strangers.
  • shrubby cinquefoil — a small shrub, Potentilla fruticosa, of the rose family, native to the Northern temperate region, having pinnate leaves and numerous, showy, bright-yellow flowers.
  • silvery cinquefoil — any of several plants belonging to the genus Potentilla, of the rose family, having yellow, red, or white five-petaled flowers, as P. reptans (creeping cinquefoil) of the Old World, or P. argentea (silvery cinquefoil) of North America.
  • silvery spleenwort — a fern, Diplazium pycnocarpon, of eastern North America, having fronds from 20 to 30 inches (50.8 to 76.2 cm) long on yellowish-green stalks.
  • six-finger country — an isolated area considered as being inhabited by people who practise inbreeding
  • skinny-rib sweater — a tight-fitting ribbed woollen jumper or pullover
  • sling psychrometer — a psychrometer so designed that the wet-bulb thermometer can be ventilated, to expedite evaporation, by whirling in the air.
  • slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
  • society of friends — a Christian denomination, founded in England c. 1650 by George Fox, that has no formal creed, liturgy, or priesthood and rejects violence in human relations, esp. warfare
  • sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
  • solitary sandpiper — a North American sandpiper, Tringa solitaria, of inland wetlands, having a brownish-gray, white-spotted back and whitish underparts.
  • speech synthesizer — device that imitates human voice
  • sperry corporation — (company)   The company which merged with the Burroughs Corporation to form Unisys Corporation. Divisions included Sperry Univac, Sperry Flight Systems, and others. Some of these were sold off after the merger.
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