22-letter words containing o, r, t, l, a, n
- transactional analysis — a form of individual or group psychotherapy focusing on social interactions, psychological games, and analysis of relationships as persons shift among the roles of parent, child, and adult. Abbreviation: TA.
- transformational rules — rules that specify in purely syntactic terms a method by which theorems may be derived from the axioms of a formal system
- transition probability — the probability of going from a given state to the next state in a Markov process.
- trichlorofluoromethane — chlorotrifluoromethane.
- trifluorochloromethane — chlorotrifluoromethane.
- unconventional warfare — warfare that is conducted within enemy lines through guerrilla tactics or subversion, usually supported at least in part by external forces.
- unemployment insurance — a government program that provides a limited number of payments to eligible workers who are involuntarily unemployed.
- unidirectional current — direct current
- united empire loyalist — any of the American colonists who settled in Canada during or after the War of American Independence because of loyalty to the British Crown
- universal postal union — an international organization, formed in Bern, Switzerland (1875), that administers and regulates international postal service. Abbreviation: UPU.
- universal product code — a bar code that indicates price, product classification, etc., and can be read electronically, as at checkout counters in supermarkets. Abbreviation: UPC.
- unprofessional conduct — activity that is contrary to the accepted code of conduct of a profession
- urban development zone — an area that is designated as being a site for urban development
- urban district council — a council of an urban district that, in conjunction with a county council, has responsibilities for local government issues
- van der waals equation — an equation of state relating the pressure, volume, and absolute temperature of a gas, taking into account the finite size of the molecules and the attractive force between them.
- verification principle — (in the philosophy of the logical positivists) the doctrine that nontautologous statements are meaningful only if it is in principle possible to establish empirically whether they are true or false
- video display terminal — Computers. a computer terminal consisting of a screen on which data or graphics can be displayed. Abbreviation: VDT.
- vitreoretinal traction — friction on the internal limiting membrane of the retina of the eye by adherent vitreous fibrils in vitreous humour detachment
- voluntary manslaughter — the unlawful killing of one human being by another with malice aforethought but in mitigating circumstances
- voluntary organization — an organization that is composed of or functions with the aid of volunteers and which provides aid or services to individuals, groups or countries
- wardour street english — affectedly archaic speech or writing
- wear out one's welcome — a kindly greeting or reception, as to one whose arrival gives pleasure: to give someone a warm welcome.
- william's bon chrétien — a variety of pear that has large yellow juicy sweet fruit
- yosemite national park — a national park in E California. 1182 sq. mi. (3060 sq. km).
- zero population growth — the maintenance of a population at a constant level by limiting the number of live births to that needed to replace the existing population.