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17-letter words containing f, i, r, e, d

  • differential gear — differential (def 7).
  • differential line — (hardware)   A kind of electrical connection using two wires, one of which carries the normal signal (V) and the other carries an inverted version the signal (-V). A differential amplifier at the receiver subtracts the inverted signal from the normal signal to yield a signal proportional to V. This subtraction is intended to cancel out any noise induced in the wires, on the assmption that the same level of noise will have been induced in both wires. Twisted pair wiring is often used to try to ensure that this is the case. The two wires might be connected at the receiver to separate analogue to digital converters and the subtraction performed digitally. The RS-422 serial line standard specifies differential drivers and receivers, whereas the earlier RS-232 standard does not. Opposite: single ended.
  • differential rate — a special lower rate, as one charged by one of two or more competing businesses.
  • differential tone — a musical sound sometimes heard when two loud notes are sounded together, lower in pitch than either
  • dimethylformamide — a colourless liquid widely used as a solvent and sometimes as a catalyst. Formula: (CH3)2NCHO
  • director of music — a person in charge of musical training and performance at an institution such as a college, especially the head bandmaster of a military band
  • disrespectfulness — The state or quality of being disrespectful; disrespect; disregard.
  • distributed force — A distributed force is a force that acts on a large part of a surface, not just on one place.
  • double quatrefoil — a charge having the form of a foil with eight leaves, used especially as the cadency mark of a ninth son.
  • double refraction — the separation of a ray of light into two unequally refracted, plane-polarized rays of orthogonal polarizations, occurring in crystals in which the velocity of light rays is not the same in all directions.
  • drained of colour — colourless
  • dress-down friday — In some companies employees are allowed to wear clothes that are less smart than usual on a Friday. This day is known as a dress-down Friday.
  • drink like a fish — any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
  • droplet infection — infection spread by airborne droplets of secretions from the nose, throat, or lungs.
  • edward fitzgerald — Edward, 1809–83, English poet: translator of drama and poetry, especially of Omar Khayyám.
  • electrified fence — a barrier that uses electric shocks to deter animals or people from crossing a boundary
  • facts and figures — details; precise information
  • fade in (or out) — to appear or cause to appear (or disappear) gradually; make or become more (or less) distinct
  • faint-heartedness — lack of courage
  • fairness doctrine — a policy mandated by the Federal Communications Commission, requiring radio and television stations to grant equal time to a political candidate, group, etc., to present an opposing viewpoint to one already aired.
  • falkland islander — a person from the Falkland Islands
  • false bread-fruit — ceriman.
  • fear and loathing — (Hunter S. Thompson) A state inspired by the prospect of dealing with certain real-world systems and standards that are totally brain-damaged but ubiquitous - Intel 8086s, COBOL, EBCDIC, or any IBM machine except the Rios (also known as the RS/6000).
  • feathered friends — Birds are sometimes referred to as our feathered friends.
  • feint-ruled paper — writing paper with light horizontal lines printed across at regular intervals
  • fiddleback spider — brown recluse spider.
  • field penny-cress — the common penny-cress, Thlaspi arvense.
  • field sales force — a team of people selling a product or service in the field as opposed to over the telephone, etc
  • financial adviser — A financial adviser is someone whose job it is to advise people about financial products and services.
  • finite difference — difference (def 9c).
  • firehose syndrome — (networking, jargon)   An absence, failure or inadequacy of flow control mechanisms causing the sender to overwhelm the receiver. The implication is that, like trying to drink from a firehose, the consequenses are worse than just loss of data, e.g. the receiver may crash. See ping-flood.
  • first commandment — “Thou shalt have no other gods before me”: first of the Ten Commandments.
  • first-aid classes — classes which teach people how to give immediate medical help in an emergency
  • first-degree burn — a burned place or area: a burn where fire had ripped through the forest.
  • first-order logic — (language, logic)   The language describing the truth of mathematical formulas. Formulas describe properties of terms and have a truth value. The following are atomic formulas: True False p(t1,..tn) where t1,..,tn are terms and p is a predicate. If F1, F2 and F3 are formulas and v is a variable then the following are compound formulas: The "order" of a logic specifies what entities "For all" and "Exists" may quantify over. First-order logic can only quantify over sets of atomic propositions. (E.g. For all p . p => p). Second-order logic can quantify over functions on propositions, and higher-order logic can quantify over any type of entity. The sets over which quantifiers operate are usually implicit but can be deduced from well-formedness constraints. In first-order logic quantifiers always range over ALL the elements of the domain of discourse. By contrast, second-order logic allows one to quantify over subsets.
  • five-spice powder — a mixture of spices used especially in Chinese cooking, usually including cinnamon, cloves, fennel seed, pepper, and star anise.
  • flagrante delicto — Law. in the very act of committing the offense.
  • floppy disk drive — disk drive
  • flowering dogwood — a North American dogwood tree, Cornus florida, having small greenish flowers in the spring, surrounded by white or pink bracts that resemble petals: the state flower and the state tree of Virginia.
  • folie de grandeur — a delusion of grandeur; megalomania.
  • forced convection — Forced convection is convection in which the movement of fluid does not happen naturally but is helped by a device such as a fan or pump.
  • fore-and-aft sail — any of various sails, as jib-headed sails, gaff sails, lugsails, lateen sails, spritsails, staysails, and jibs, that do not set on yards and whose normal position, when not trimmed, is in a fore-and-aft direction amidships.
  • forensic evidence — evidence obtained by the use of science, for example DNA evidence, etc
  • forensic medicine — the application of medical knowledge to questions of civil and criminal law, especially in court proceedings.
  • foundation course — A foundation course is a course that you do at some colleges and universities in order to prepare yourself for a longer or more advanced course.
  • 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].
  • francis ferdinand — 1863–1914, archduke of Austria: heir apparent to the thrones of Austria and Hungary whose assassination precipitated the outbreak of World War I (nephew of Francis Joseph I).
  • frankenstein food — any foodstuff that has been genetically modified
  • frederick pollock — Sir Frederick, 1845–1937, English legal scholar and author.
  • frederick william — 1795–1861, king of Prussia 1840–61 (brother of William I of Prussia).
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