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15-letter words containing r, t, f

  • fabric softener — a substance added to fabrics during laundering to make them puffier and softer.
  • factor analysis — the use of one of several methods for reducing a set of variables to a lesser number of new variables, each of which is a function of one or more of the original variables.
  • factory chimney — a tall chimney of a factory
  • factory farming — Factory farming is a system of farming which involves keeping animals indoors, often with very little space, and giving them special foods so that they grow more quickly or produce more eggs or milk.
  • faculty advisor — a member of the faculty who gives advice to students
  • faint-heartedly — nervously
  • fair employment — the policy or practice of employing people on the basis of their capabilities only, without regard to race, color, religion, sex, national origin, age, or disability.
  • fairy footsteps — heavy footsteps
  • fairy godfather — a kindly sponsor or guardian; godfather.
  • fairy godmother — a kindly sponsor or guardian; godmother.
  • faithworthiness — the quality of being faithworthy
  • falling weather — wet weather, as rain or snow.
  • fallout shelter — protective bunker
  • false buckthorn — a spiny shrub or small tree, Bumelia lanuginosa, of the sapodilla family, native to the southern U.S., having gummy, milky sap and white, bell-shaped flowers and yielding a hard, light-brown wood.
  • false decretals — the Pseudo-Isidorian documents.
  • false miterwort — foamflower.
  • false pretences — fraud, deception
  • false pretenses — If you do something under false pretenses, you do it when people do not know the truth about you and your intentions.
  • familiar spirit — a supernatural spirit often assuming animal form, supposed to attend and aid a witch, wizard, etc
  • familiarisation — Alternative spelling of familiarization.
  • familiarization — to make (onself or another) well-acquainted or conversant with something.
  • family practice — medical specialization in general practice, requiring training beyond that of general practice and leading to board certification.
  • fantasmagorical — Alternative form of phantasmagorical.
  • farm gate price — the price for the sale of farm produce direct from the producer
  • farmers' market — a market or group of stalls and booths where farmers and sometimes other vendors sell their products directly to consumers.
  • fault tolerance — (architecture)   1. The ability of a system or component to continue normal operation despite the presence of hardware or software faults. This often involves some degree of redundancy. 2. The number of faults a system or component can withstand before normal operation is impaired.
  • fauntleroy suit — a formal outfit for a boy composed of a hip-length jacket and knee-length pants, often in black velvet, and a wide, lacy collar and cuffs, usually worn with a broad sash at the waist and sometimes a large, loose bow at the neck, popular in the late 19th century.
  • feast or famine — characterized by alternating, extremely high and low degrees of prosperity, success, volume of business, etc.: artists who lead a feast-or-famine life.
  • feast-or-famine — characterized by alternating, extremely high and low degrees of prosperity, success, volume of business, etc.: artists who lead a feast-or-famine life.
  • feather banding — decorative banding of veneer or inlay having the grain laid diagonally to the grain of the principal surface.
  • featherstitched — Simple past tense and past participle of featherstitch.
  • feature article — a feature article in a newspaper or magazine deals in depth with a topic or person
  • feelgood factor — When journalists refer to the feelgood factor, they mean that people are feeling hopeful and optimistic about the future.
  • fellow creature — a kindred creature, especially a fellow human being.
  • fellow traveler — a person who supports or sympathizes with a political party, especially the Communist Party, but is not an enrolled member.
  • fencepost error — 1. (Rarely "lamp-post error") A problem with the discrete equivalent of a boundary condition, often exhibited in programs by iterative loops. From the following problem: "If you build a fence 100 feet long with posts 10 feet apart, how many posts do you need?" (Either 9 or 11 is a better answer than the obvious 10). For example, suppose you have a long list or array of items, and want to process items m through n; how many items are there? The obvious answer is n - m, but that is off by one; the right answer is n - m + 1. The "obvious" formula exhibits a fencepost error. See also zeroth and note that not all off-by-one errors are fencepost errors. The game of Musical Chairs involves a catastrophic off-by-one error where N people try to sit in N - 1 chairs, but it's not a fencepost error. Fencepost errors come from counting things rather than the spaces between them, or vice versa, or by neglecting to consider whether one should count one or both ends of a row. 2. (Rare) An error induced by unexpected regularities in input values, which can (for instance) completely thwart a theoretically efficient binary tree or hash coding implementation. The error here involves the difference between expected and worst case behaviours of an algorithm.
  • ferranti f100-l — (processor)   A processor, with 16-bit addressing, registers and data paths and a 1-bit serial ALU. The F100-L could only access 32K of memory (one address bit was used for indirection). It was designed by a British company for the British Military. The unique feature of the F100-L was that it had a complete control bus available for a coprocessor. Any instruction the F100-L couldn't decode was sent directly to the coprocessor for processing. Applications for coprocessors at the time were limited, but the design is still used in modern processors, such as the National Semiconductor 32000 series. The disk operating system was written by Alec Cawley.
  • ferroelasticity — (physics) A phenomenon, analogous to ferromagnetism and ferroelectricity, in which spontaneous strain arises within a material.
  • ferrous sulfate — a bluish-green, crystalline, saline-tasting, water-soluble heptahydrated solid, FeSO 4 ⋅7H 2 O, used chiefly in the manufacture of other iron salts, in water purification, fertilizer, inks, pigments, tanning, photography, and in medicine in the treatment of anemia.
  • fetch and carry — to go and bring back; return with; get: to go up a hill to fetch a pail of water.
  • fibrocartilages — Plural form of fibrocartilage.
  • field artillery — artillery mobile enough to accompany troops in the field.
  • field woundwort — the plant Stachys arvensis
  • fiesta de toros — a bullfight; corrida.
  • fight-or-flight — denoting instinctive response
  • fighter command — a former unit of the Royal Air Force dedicated to the use of fighter aircraft, esp against enemy bombers and their escorts during WWII
  • fighting french — Free French.
  • fighting spirit — courage and determination expressed in a willingness to fight or struggle
  • figurate number — a number having the property that the same number of equally spaced dots can be arranged in the shape of a regular geometrical figure.
  • figure of eight — figure eight.
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