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18-letter words containing t, o, r, s, i

  • constructive proof — (mathematics)   A proof that something exists that provides an example or a method for actually constructing it. For example, for any pair of finite real numbers n < 0 and p > 0, there exists a real number 0 < k < 1 such that f(k) = (1-k)*n + k*p = 0. A constructive proof would proceed by rearranging the above to derive an equation for k: k = 1/(1-n/p) From this and the constraints on n and p, we can show that 0 < k < 1. A few mathematicians actually reject *all* non-constructive arguments as invalid; this means, for instance, that the law of the excluded middle (either P or not-P must hold, whatever P is) has to go; this makes proof by contradiction invalid. See intuitionistic logic. Constructive proofs are popular in theoretical computer science, both because computer scientists are less given to abstraction than mathematicians and because intuitionistic logic turns out to be an appropriate theoretical treatment of the foundations of computer science.
  • consumer terrorism — the practice of introducing dangerous substances to foodstuffs or other consumer products, esp to extort money from the manufacturers
  • contact dermatitis — dermatitis caused by direct contact with an irritating substance, as an allergen or chemical
  • contents insurance — the insurance for the personal property in a household
  • continuous process — A continuous process is a process in which the product comes out without interruption and not in groups.
  • contradistinctions — Plural form of contradistinction.
  • contrastive stress — a stress imposed on a word or syllable contrary to its normal accentuation in order to contrast it with an alternative word or syllable or to focus attention on it, as the stress given to the normally unstressed word of in government of the people, by the people, for the people in order to point up the parallel between of, by, and for and to distinguish of from words such as over or against.
  • conversation chair — an English chair of the 18th century designed to be straddled facing the back of the chair with the elbows resting on the crest rail: an English imitation of the voyeuse.
  • conversation class — a class in which one learns to speak a foreign language
  • conversation piece — something, esp an unusual object, that provokes conversation
  • conversationalists — Plural form of conversationalist.
  • cornell university — (body, education)   A US Ivy League University founded in 1868 by businessman Ezra Cornell and respected scholar Andrew Dickson White. Cornell includes thirteen colleges and schools. On the Ithaca campus are the seven undergraduate units and four graduate and professional units. The Medical College and the Graduate School of Medical Sciences are in New York City. Cornell has 13,300 undergraduates and 6,200 graduate and professional students. See also Concurrent ML, Cornell Theory Center, Cornell University Programming Language, CU-SeeMe, ISIS.
  • cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
  • corpus christi bay — a bay in S Texas, at the mouth of the Nueces River.
  • counter-aggression — the action of a state in violating by force the rights of another state, particularly its territorial rights; an unprovoked offensive, attack, invasion, or the like: The army is prepared to stop any foreign aggression.
  • counter-hypothesis — a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.
  • counterattractions — Plural form of counterattraction.
  • counterculturalism — The counterculture movement or lifestyle.
  • counterculturalist — the culture and lifestyle of those people, especially among the young, who reject or oppose the dominant values and behavior of society.
  • counterproposition — a proposition made in place of or in opposition to a preceding one.
  • counterrevolutions — Plural form of counterrevolution.
  • countryside agency — (in England) a government agency that promotes the conservation and enjoyment of the countryside and aims to stimulate employment in rural areas
  • cranial osteopathy — osteopathy that focuses on the cranium and the spine
  • creatine phosphate — phosphocreatine.
  • crested dog's-tail — a common wiry perennial grass, Cynosurus cristatus, of meadows and pasture
  • critical constants — the physical constants that express the properties of a substance in its critical state
  • crocodile-infested — full of crocodiles
  • crookes radiometer — a type of radiometer consisting of an evacuated glass bulb containing a set of lightweight vanes, each blackened on one side. The vanes are mounted on a vertical axis and revolve when light, or other radiant energy, falls on them
  • crude oil desalter — A crude oil desalter is equipment which removes inorganic salts from crude oil, using chemical or electrostatic separation.
  • crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
  • crystal oscillator — a clear, transparent mineral or glass resembling ice.
  • cultural diffusion — act of diffusing; state of being diffused.
  • cultural sociology — the study of the origins and development of societal institutions, norms, and practices.
  • cumbrian mountains — a mountain range in NW England, in Cumbria. Highest peak: Scafell Pike, 977 m (3206 ft)
  • cumulative scoring — a method of scoring in which the score of a partnership is taken as the sum of their scores on all hands played.
  • customer relations — Customer relations are the relationships that a business has with its customers and the way in which it treats them.
  • cytoarchitectonics — Cytoarchitecture.
  • deanthropomorphism — the ridding of philosophy or religion of anthropomorphic beliefs and doctrines.
  • dechristianization — The act of dechristianizing; the systematic removal of Christianity or Christian elements.
  • dendrochronologist — One who carries out dendrochronology.
  • depository library — a library designated by law to receive without charge all or a selection of the official publications of a government.
  • derestriction sign — a circular white sign with a black diagonal band signifying the lifting of any other speed restriction
  • dia de los muertos — Day of the Dead.
  • diastereoisomerism — (chemistry) Any form of stereoisomerism other than enantiomerism.
  • diatomaceous earth — an unconsolidated form of diatomite
  • diethylstilbestrol — a nonsteroidal synthetic estrogen, C 18 H 20 O 2 , used in medicine chiefly in the treatment of menopausal symptoms and in animal feeds for chemical caponization: formerly used during pregnancy for the prevention of miscarriage but discontinued owing to its association with an increased risk of vaginal and cervical cancers in women having had fetal exposure. Abbreviation: DES.
  • digital switchover — the process of changing the method of transmitting television from analogue to digital format
  • dihydrotachysterol — a white, crystalline, water-insoluble sterol, C 28 H 46 O, derived from ergosterol: used chiefly in the treatment of hypoparathyroidism.
  • diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
  • diplomatic service — diplomatic corps
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