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23-letter words containing r, o, f

  • dichlorodiethyl sulfide — mustard gas.
  • dichlorodifluoromethane — a colourless nonflammable gas easily liquefied by pressure: used as a propellant in aerosols and fire extinguishers and as a refrigerant. Formula: CCl2F2
  • dictionary of computing — Free On-line Dictionary of Computing
  • differentiable manifold — a manifold having the property that any two overlapping open sets are homeomorphic to locally Euclidean spaces whose coordinates are related by differentiable functions, a property with wide applications in mathematical physics and differential geometry.
  • differential compaction — differences in the extent to which sediment is compacted owing to topographic irregularities of the surface on which it is deposited.
  • differential psychology — the branch of psychology dealing with the study of characteristic differences or variations of groups or individuals, especially through the use of analytic techniques and statistical methods.
  • dionysius of alexandria — ("the Great") a.d. c190–265, patriarch of Alexandria 247?–265?.
  • director of photography — the person who is responsible for all operations concerning camera work and lighting during the production of a film.
  • disjunctive normal form — (DNF) A logical formula consisting of a disjunction of conjunctions where no conjunction contains a disjunction. E.g. the DNF of (A or B) and C is (A and C) or (B and C).
  • dissociate oneself from — to deny or repudiate any connection with
  • drawing exchange format — (DXF) A file format for graphical information, similar to IGES. Commonly used by CAD systems like AutoCAD.
  • drummond of hawthornden — William. 1585–1649, Scottish poet, historian, and royalist pamphleteer
  • earthquake-proof design — Earthquake-proof design is design which will not be badly damaged by earthquakes or tsunamis.
  • eating your own dogfood — eating one's own dogfood
  • electronic file cabinet — a device, controlled by software, for the storage and retrieval of information
  • ellipsoid of revolution — a geometric surface produced by rotating an ellipse about one of its two axes and having circular plane surfaces perpendicular to the axis of revolution
  • embarrassment of riches — If you say that someone has an embarrassment of riches, you mean that they have so many good things that these things are a problem.
  • embden-meyerhof pathway — the metabolic reaction sequence in glycolysis by which glucose is converted to pyruvic acid with production of ATP
  • entrance qualifications — academic requirements
  • extremely low frequency — a radio frequency or radio-frequency band below 3 kilohertz
  • fall (all) over oneself — to behave in too eager or zealous a manner
  • fall through the cracks — to break without complete separation of parts; become fissured: The plate cracked when I dropped it, but it was still usable.
  • fear-driven development — (jargon, humour)   When project management adds more pressure (fires someone or something). A play on test-driven development.
  • fendalton shopping cart — a four-wheel drive recreational vehicle
  • ferric ammonium oxalate — a green, crystalline, water-soluble, synthetically produced powder, (NH 4) 3 Fe(C 2 O 4) 3 ⋅3H 2 O, used chiefly in the manufacture of blueprint paper.
  • fiddle while rome burns — If you say that someone is fiddling while Rome burns, you mean that they are not dealing with a difficult or dangerous situation but instead are doing useless things or pretending that nothing is wrong.
  • field effect transistor — a transistor in which the output current is varied by varying the value of an electric field within a region of the device. Abbreviation: FET.
  • field-effect transistor — a transistor in which the output current is varied by varying the value of an electric field within a region of the device. Abbreviation: FET.
  • fifth marquis lansdowne — Henry Charles Keith, 5th Marquis of Lansdowne, Lansdowne, 5th Marquis of.
  • finite impulse response — (electronics, DSP)   (FIR) A type of digital signal filter, in which every sample of output is the weighted sum of past and current samples of input, using only some finite number of past samples.
  • firing on all cylinders — working or performing at full capability
  • first come first served — You say 'first come first served' to indicate that a group of people or things will be dealt with or given something in the order in which they arrive.
  • first earl of leicester — Robert, 1st Earl of Leicester, 1532?–88, British statesman and favorite of Queen Elizabeth.
  • first earl of strafford — Thomas, 1st Earl of Strafford, Strafford, 1st Earl of.
  • fischer-tropsch process — a catalytic hydrogenation method to produce liquid hydrocarbon fuels from carbon monoxide.
  • fish in troubled waters — any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
  • five-and-ten-cent store — a store that sells a wide variety of inexpensive merchandise, orig. with many articles priced at five or ten cents
  • floating-point specrate — SPECrate_fp92
  • flow-matic or flowmatic — (Originally B-0) Possibly the first English-like DP language. Developed at Remington Rand in 1958 for the UNIVAC I.
  • fluorochlorohydrocarbon — (organic chemistry) Any compound formally derived from a hydrocarbon by replacing some hydrogen atoms with fluorine and some with chlorine (at least one being retained).
  • for better or for worse — whatever the consequences
  • for it's/their own sake — If you do something for its own sake, you do it because you want to, or because you enjoy it, and not for any other reason. You can also talk about, for example, art for art's sake or sport for sport's sake.
  • for whom the bell tolls — a novel (1940) by Ernest Hemingway.
  • foreign currency income — the income earned by a country from foreign currency
  • foreign exchange market — the market for the international buying, selling and trading of currencies
  • foreign exchange office — (communications)   (FXO) An analog telephone plug on a handset that receives POTS service from the telephone exchange ("central office") via a Foreign eXchange Subscriber socket and provides on-hook/off-hook indication to the exchange.
  • forest tent caterpillar — any of the larvae of several moths of the genus Malacosoma, which feed on the leaves of orchard and shade trees and live colonially in a tentlike silken web.
  • forewarned is forearmed — If you say 'Forewarned is forearmed', you are saying that if you know about a problem or situation in advance, you will be able to deal with it when you need to.
  • forward exchange market — a market for contracts that specify the exchange rate of a currency to be delivered at a later date
  • four colour map theorem — (mathematics, application)   (Or "four colour theorem") The theorem stating that if the plane is divided into connected regions which are to be coloured so that no two adjacent regions have the same colour (as when colouring countries on a map of the world), it is never necessary to use more than four colours. The proof, due to Appel and Haken, attained notoriety by using a computer to check tens of thousands of cases and is thus not humanly checkable, even in principle. Some thought that this brought the philosophical status of the proof into doubt. There are now rumours of a simpler proof, not requiring the use of a computer. See also chromatic number
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