18-letter words containing tr
- electroluminescent — Having the quality of electroluminescence.
- electron telescope — an astronomical telescope with an attachment for converting the infrared radiation emitted from the surface of planets into a visible image
- electron transport — the metabolic process in mitochondria or chloroplasts, in which electrons are transferred in stages from energy-rich compounds to molecular oxygen with liberation of energy
- electronic banking — the transfer of money between financial institutions through an exchange of electronic signals over a network
- electronic editing — editing of a sound or vision tape recording by electronic rerecording rather than by physical cutting
- electronic mailbox — a device used to store electronic mail
- electronic meeting — (messaging) The use of a network of personal computers to improve communication that takes place in a meeting. Electronic meetings are effective with as few as two participants and with over 100 participants. Participants can be face-to-face in a meeting room or distributed around the world. They may all be participating at the same time or different times.
- electronic receipt — An electronic receipt is one created in a computerized cash register, or by an online retailer. It will usually show the date and time, how payment is made, and other details of the sale.
- electronic tagging — Electronic tagging is a system in which a criminal or suspected criminal has an electronic device attached to them which enables the police to know if they leave a particular area.
- electronic warfare — the military use of electronics to prevent or reduce an enemy's effective use and to protect friendly use of electromagnetic radiation equipment
- electrophotography — Any of several methods of photocopying in which an image is created and then transferred between surfaces using static electricity.
- electroretinograms — Plural form of electroretinogram.
- electrostatic lens — an electron lens consisting of a system of metal electrodes, the electrostatic field of which focuses the charged particles
- electrostatic unit — any unit that belongs to a system of electrical cgs units in which the electric constant is given the value of unity and is taken as a pure number
- electrotherapeutic — Relating to electrotherapeutics.
- electrovalent bond — a type of chemical bond in which one atom loses an electron to form a positive ion and the other atom gains the electron to form a negative ion. The resulting ions are held together by electrostatic attraction
- elizabeth petrovna — 1709-62; empress of Russia (1741-62): daughter of Peter I
- entrepreneurialism — The spirit or state of acting in an entrepreneurial manner.
- entry requirements — the types and grades of examination required to enter a university
- evapotranspiration — The process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.
- evolution strategy — (ES) A kind of evolutionary algorithm where individuals (potential solutions) are encoded by a set of real-valued "object variables" (the individual's "genome"). For each object variable an individual also has a "strategy variable" which determines the degree of mutation to be applied to the corresponding object variable. The strategy variables also mutate, allowing the rate of mutation of the object variables to vary. An ES is characterised by the population size, the number of offspring produced in each generation and whether the new population is selected from parents and offspring or only from the offspring. ES were invented in 1963 by Ingo Rechenberg, Hans-Paul Schwefel at the Technical University of Berlin (TUB) while searching for the optimal shapes of bodies in a flow.
- fallot's tetralogy — a congenital heart disease in which there are four defects: pulmonary stenosis, enlarged right ventricle, a ventricular septal defect, and an aorta whose origin lies over the septal defect. In babies suffering this disease the defects can be corrected by surgery
- family-tree theory — a theory that describes language change in terms of genetically related languages developing in successive splits from a common parent language, such as Indo-European, as depicted by a family tree diagram.
- fast-food industry — the industry surrounding fast-food restaurants
- file control block — (operating system) (FCB) An MS-DOS data structure that stores information about an open file. The number of FCBs is configured in CONFIG.SYS with a command FCBS=x,y where x (between 1 and 255 inclusive, default 4) specifies the number of file control blocks to allocate and therefore the number of files that MS-DOS can have open at one time. y (not needed from DOS 5.0 onward) specifies the number of files to be closed automatically if all x are in use.
- fitness instructor — physical trainer, exercise teacher
- foreign-trade zone — free port (def 1).
- forensic chemistry — the application of facts concerning chemistry to questions of civil and criminal law.
- free-range poultry — poultry kept in natural nonintensive conditions
- frequency spectrum — The frequency spectrum of an electrical signal is the distribution of the amplitudes and phases of each frequency component against frequency.
- fuming nitric acid — a colorless, yellowish, or brownish fuming corrosive liquid, usually prepared from nitric acid by the addition of excess nitrogen dioxide: used in organic synthesis for nitration, and as an oxidizer in liquid propellants for rockets.
- gamma distribution — a continuous two-parameter distribution from which the chi-square and exponential distributions are derived, written Gamma (α. β), where α and β are greater than zero, and defined in terms of the gamma function
- garden loosestrife — any of various plants belonging to the genus Lysimachia, of the primrose family, having clusters of usually yellow flowers, as L. vulgaris (garden loosestrife) or L. quadrifolia (whorled loosestrife)
- gastroduodenostomy — See under gastroenterostomy.
- gastroenterologist — the study of the structure, functions, and diseases of digestive organs.
- general contractor — a person who contracts to construct a building or buildings, for a stipulated sum, in accordance with certain plans and specifications, or to remodel or build an addition to a building
- geometrical optics — the branch of optics dealing with light as rays, especially in the study of the effects of lenses and mirrors on light beams and of their combination in optical instruments.
- glyceryl trioleate — olein.
- go with the stream — to conform to the accepted standards
- grand traverse bay — an inlet of Lake Michigan on the NW of the Lower Peninsula of Michigan.
- great-circle track — the route of a ship following the arc of a great circle, appearing as a curved line on a Mercator chart and as a straight line on a gnomonic chart.
- gulf stream system — a major ocean-current system consisting of the Gulf Stream and the Florida and North Atlantic currents.
- gulliver's travels — a social and political satire (1726) by Jonathan Swift, narrating the voyages of Lemuel Gulliver to four imaginary regions: Lilliput, Brobdingnag, Laputa, and the land of the Houyhnhnms.
- haulage contractor — a person or firm that transports goods by lorry
- hydrogen electrode — a standard reference electrode with a potential of zero, used in pH measurements, consisting of a platinum-black surface covered with hydrogen bubbles.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyperconcentration — the act of concentrating; the state of being concentrated.
- hypogastric artery — iliac artery (def 3).
- indestructibleness — The quality of being indestructible.
- induction training — training intended to enable new staff and recruits to do their work