18-letter words containing n, o, s, y, t
- proton synchrotron — a synchrotron used for accelerating protons.
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- psychotechnologist — a specialist in psychotechnology
- radius of gyration — the distance from an axis at which the mass of a body may be assumed to be concentrated and at which the moment of inertia will be equal to the moment of inertia of the actual mass about the axis, equal to the square root of the quotient of the moment of inertia and the mass.
- raman spectroscopy — a form of spectroscopy which uses the Raman effect for studying molecules
- 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
- 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.
- 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.
- say/kiss goodnight — If you say goodnight to someone or kiss them goodnight, you say something such as 'Goodnight' to them or kiss them before one of you goes home or goes to sleep.
- 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.
- seagate technology — (company) A major manufacturer of hard disk drives, founded in 1979 as "Shugart Technology" by Alan F. Shugart and Finis Conner. That name is on the original patents for the 5.25" hard disk drive. They changed the name to Seagate Technology soon after to avoid confusion, and also to avoid friction with Xerox, which had since purchased Alan's earlier company, Shugart Associates. Address: 920 Disc Drive, Scotts Valley, CA 95066, USA. Fax: +1 (408) 438 3320.
- search-and-destroy — designed to find and destroy by bombing etc
- second only to sth — If you say that something is second only to something else, you mean that only that thing is better or greater than it.
- secondary industry — manufacturing, services, etc.
- 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.
- separation anxiety — the normal fear and apprehension expressed by infants when removed from their mothers or approached by strangers.
- shugart technology — Seagate Technology
- shut one's eyes to — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
- significant symbol — a verbal or nonverbal gesture, as a word or smile, that has acquired a conventionalized meaning.
- 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
- 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.
- sound and the fury — a novel (1929) by William Faulkner.
- 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.
- st john chrysostom — Saint John, a.d. 347?–407, ecumenical patriarch of Constantinople.
- stand-by generator — an electrical system which operates automatically in case the usual system malfunctions
- state of emergency — If a government or other authority declares a state of emergency in an area, it introduces special measures such as increased powers for the police or army, usually because of civil disorder or because of a natural disaster such as an earthquake.
- stationary bicycle — an exercise bike
- stockholm syndrome — an emotional attachment to a captor formed by a hostage as a result of continuous stress, dependence, and a need to cooperate for survival.
- strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
- superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
- symbolist movement — a movement beginning in French and Belgian poetry towards the end of the 19th century with the verse of Mallarmé, Valéry, Verlaine, Rimbaud, Maeterlinck, and others, and seeking to express states of mind rather than objective reality by making use of the power of words and images to suggest as well as denote
- symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
- symphony orchestra — a large orchestra composed of wind, string, and percussion instruments and organized to perform symphonic compositions.
- synthetic division — a simplified procedure for dividing a polynomial by a linear polynomial.
- synthetic geometry — elementary geometry, as distinct from analytic geometry.
- system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.