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

  • feint-ruled paper — writing paper with light horizontal lines printed across at regular intervals
  • finite difference — difference (def 9c).
  • 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.
  • flagrante delicto — Law. in the very act of committing the offense.
  • 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.
  • 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].
  • frankenstein food — any foodstuff that has been genetically modified
  • freight forwarder — a person or firm that arranges to pick up or deliver goods on instructions of a shipper or a consignee from or to a point by various necessary conveyances and common carriers.
  • friend of dorothy — a male homosexual
  • from side to side — movement: back and forth
  • front-wheel drive — a drive system in which engine power is transmitted through the front wheels only.
  • further education — adult education.
  • george whitefield — George, 1714–70, English Methodist evangelist.
  • grooved fricative — a fricative, as (s), in which air is channeled through a groove along the center of the tongue.
  • head of the river — any of various annual rowing regattas held on particular rivers
  • indefinite number — a variable or unspecified number.
  • induction furnace — a type of electric furnace used for melting a charge of scrap by the heat produced by its own electrical resistance.
  • interference drag — the drag on an aircraft caused by the interaction of two aerodynamic bodies.
  • judgment of paris — the decision by Paris to award Aphrodite the golden apple of discord competed for by Aphrodite, Athena, and Hera.
  • life and/or death — If you say that something is a matter of life and death, you are emphasizing that it is extremely important, often because someone may die or suffer great harm if people do not act immediately.
  • litigation friend — a person acting on behalf of an infant or other person under legal disability
  • lord of the flies — a novel (1954) by William Golding.
  • man's best friend — a dog, especially as a pet.
  • mare fecunditatis — (Sea of Fertility) a dark plain in the fourth quadrant and extending into the first quadrant of the face of the moon: about 160,000 sq. mi. (415,000 sq. km).
  • north frigid zone — the part of the earth's surface between the Arctic Circle and the North Pole.
  • northern studfish — See under studfish.
  • object identifier — (programming)   (OID) Generally an implementation-specific integer or pointer that uniquely identifies an object.
  • odds-on favourite — a person, team, horse, etc that is regarded as the most likely to win a competition
  • organized ferment — ferment (def 1).
  • paratyphoid fever — Also called paratyphoid fever. an infectious disease, similar in some of its symptoms to typhoid fever but usually milder, caused by any of several bacilli of the genus Salmonella other than S. typhi.
  • pate de foie gras — See under foie gras.
  • peridot of ceylon — a honey-colored tourmaline, used as a gem: not a true peridot.
  • periodic function — a function of a real or complex variable that is periodic.
  • pre-modifications — an act or instance of modifying.
  • proof of identity — a document or documents used to verify someone's identity
  • reduction formula — a formula, such as sin (90° ± A) = cos A, expressing the values of a trigonometric function of any angle greater than 90° in terms of a function of an acute angle
  • refractory period — a short period after a nerve or muscle cell fires during which the cell cannot respond to additional stimulation.
  • registered office — official business address
  • rheumatoid factor — an antibody that is found in the blood of many persons afflicted with rheumatoid arthritis and that reacts against globulins in the blood.
  • self-administered — to manage (affairs, a government, etc.); have executive charge of: to administer the law.
  • self-depreciating — self-deprecating.
  • self-introduction — the act of introducing or the state of being introduced.
  • self-reproduction — the act or process of reproducing.
  • semi-manufactured — the making of goods or wares by manual labor or by machinery, especially on a large scale: the manufacture of television sets.
  • south farmingdale — a town on central Long Island, in SE New York.
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