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

  • fourier transform — a mapping of a function, as a signal, that is defined in one domain, as space or time, into another domain, as wavelength or frequency, where the function is represented in terms of sines and cosines.
  • fractal dimension — (mathematics)   A common type of fractal dimension is the Hausdorff-Besicovich Dimension, but there are several different ways of computing fractal dimension. Fractal dimension can be calculated by taking the limit of the quotient of the log change in object size and the log change in measurement scale, as the measurement scale approaches zero. The differences come in what is exactly meant by "object size" and what is meant by "measurement scale" and how to get an average number out of many different parts of a geometrical object. Fractal dimensions quantify the static *geometry* of an object. For example, consider a straight line. Now blow up the line by a factor of two. The line is now twice as long as before. Log 2 / Log 2 = 1, corresponding to dimension 1. Consider a square. Now blow up the square by a factor of two. The square is now 4 times as large as before (i.e. 4 original squares can be placed on the original square). Log 4 / log 2 = 2, corresponding to dimension 2 for the square. Consider a snowflake curve formed by repeatedly replacing ___ with _/\_, where each of the 4 new lines is 1/3 the length of the old line. Blowing up the snowflake curve by a factor of 3 results in a snowflake curve 4 times as large (one of the old snowflake curves can be placed on each of the 4 segments _/\_). Log 4 / log 3 = 1.261... Since the dimension 1.261 is larger than the dimension 1 of the lines making up the curve, the snowflake curve is a fractal. [sci.fractals FAQ].
  • frankenstein food — any foodstuff that has been genetically modified
  • fraternal society — a club or other association, usually of men, having a limited membership and devoted to professional, religious, charitable, or social activities.
  • from side to side — movement: back and forth
  • frostbite sailing — the sport of sailing in temperate latitudes during the winter despite cold weather.
  • functional isomer — any of several structural isomers that have the same molecular formula but with the atoms connected in different ways and therefore falling into different functional groups.
  • furbish lousewort — any plant belonging to the genus Pedicularis, of the figwort family, as the wood betony, formerly supposed to cause lice in sheep feeding on it: one species, P. furbishiae (Furbish lousewort) of parts of Maine and New Brunswick, Canada, having finely toothed leaves and a cluster of yellow flowers, is endangered and was thought to be extinct until specimens were discovered in 1946 and again in 1976.
  • general sarmiento — a city in E Argentina, a suburb of Buenos Aires.
  • geomagnetic storm — magnetic storm.
  • george washington — Booker T(aliaferro) [boo k-er tol-uh-ver] /ˈbʊk ər ˈtɒl ə vər/ (Show IPA), 1856–1915, U.S. reformer, educator, author, and lecturer.
  • gestatorial chair — a ceremonial chair on which the pope is carried
  • get a rise out of — to get up from a lying, sitting, or kneeling posture; assume an upright position: She rose and walked over to greet me. With great effort he rose to his knees.
  • get in one's hair — to annoy one
  • get to first base — Baseball. the first in counterclockwise order of the bases from home plate. the position of the player covering the area of the infield near first base.
  • gi bill of rights — any of various Congressional bills enacted to provide funds for college educations, home-buying loans, and other benefits for armed-services veterans.
  • glastonbury chair — a folding chair having legs crossed front-to-back and having arms connected to the back and to the front seat rail.
  • globus hystericus — the sensation of having a lump in the throat or difficulty in swallowing for which no medical cause can be found.
  • go-faster stripes — (jargon)   chrome. Mainstream in some parts of UK.
  • goldbeater's skin — the prepared outside membrane of the large intestine of the ox, used by goldbeaters to lay between the leaves of the metal while they beat it into gold leaf.
  • graduated pension — the money that an employee receives after retirement if they have paid into the graduated pension scheme
  • great vowel shift — a series of changes in the quality of the long vowels between Middle and Modern English as a result of which all were raised, while the high vowels (ē) and (o̅o̅), already at the upper limit, underwent breaking to become the diphthongs (ī) and (ou).
  • grist to the mill — If you say that something is grist to the mill, you mean that it is useful for a particular purpose or helps support someone's point of view.
  • haematocrystallin — Alternative form of hematocrystallin.
  • hasbrouck heights — a borough in NE New Jersey.
  • have it in for sb — If someone has it in for you, they dislike you and try to cause problems for you.
  • high-carbon steel — steel containing between 0.5 and 1.5 per cent carbon
  • histamine blocker — any of various substances that act at a specific receptor site to block certain actions of histamine.
  • historical method — the process of establishing general facts and principles through attention to chronology and to the evolution or historical course of what is being studied.
  • historical school — a school of economists that arose in Germany in the 19th century in reaction to the principles of the classical economists, and that maintained that the factors making up an economy are variable and develop out of social institutions.
  • historiographical — the body of literature dealing with historical matters; histories collectively.
  • home improvements — improvements to one's home, such as new kitchens and bathrooms, central heating etc
  • homeland security — national defence
  • hornblende schist — a variety of schist containing needles of hornblende that lie in parallel planes.
  • horticulturalists — Plural form of horticulturalist.
  • hospital gangrene — Pathology. a contagious, often fatal gangrene, especially involving amputation stumps and war wounds, occurring usually in crowded, ill-kept hospitals, and caused by putrefactive bacteria.
  • housekeeping cart — A housekeeping cart is a large metal basket on wheels which is used by a cleaner in a hotel to move clean bed linen, towels, and cleaning equipment.
  • hydrogasification — a high-temperature, high-pressure process for producing liquid or gaseous fuels from fine particles of coal and hydrogen gas
  • hydrotherapeutics — hydrotherapy.
  • hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
  • hyperpolarisation — Alternative spelling of hyperpolarization.
  • hypocholesteremia — an abnormally low amount of cholesterol in the blood.
  • ichthyosarcotoxin — a term applied to any poison found in the flesh of poisonous fishes.
  • icositetrahedrons — Plural form of icositetrahedron.
  • idiosyncratically — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
  • illinois waterway — a waterway system in N Illinois made up of canals and rivers connecting Lake Michigan in Chicago with the Mississippi River. 336 miles (541 km) long.
  • immediate version — child version
  • immigrant workers — people who work in a country they arrived to in order to settle there
  • immunofluorescent — Of, pertaining to, or using immunofluorescence.
  • immunosuppressant — (pharmacology) Capable of immunosuppression, immunosuppressive.
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