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18-letter words containing e, n, t, r

  • cyclopean concrete — concrete containing stones larger than 6 inches (15 cm).
  • cytoarchitectonics — Cytoarchitecture.
  • daisywheel printer — (printer)   A kind of impact printer where the characters are arranged on the ends of the spokes of a wheel (resembling the petals on a daisy). The wheel (usually made of plastic) is rotated to select the character to print and then an electrically operated hammer mechanism bends the selected spoke forward slightly, sandwiching an ink ribbon between the character and the paper, as in a typewriter. One advantage of this arrangement over that of a typewriter is that different wheels may be inserted to produce different typefaces.
  • data transfer rate — (communications)   (Or "throughput, data rate", "transmission rate") The amount of data transferred in one direction over a link divided by the time taken to transfer it, usually expressed in bits per second (bps), bytes per second (Bps) or baud. The link may be anything from an interface to a hard disk to a radio transmission from a satellite. Where data transfer is not continuous throughout the given time interval, the data transfer rate is thus an average rate that will be lower than the peak rate. The peak or maximum possible rate may itself be lower than the capacity of the communication channel if the channel is shared, or part of the signal is not considered as data, e.g. checksum or routing information. When applied to data rate, the multiplier prefixes "kilo-", "mega-", "giga-", etc. (and their abbreviations, "k", "M", "G", etc.) always denote powers of 1000. For example, 64 kbps is 64,000 bits per second. This contrasts with units of storage where they stand for powers of 1024, e.g. 1 KB = 1024 bytes. The other important characteristic of a channel is its latency. The bandwidth of a channel determines the data transfer rate but is a different characteristic, measured in Hertz. [Relationship?]
  • datacenter manager — (job)   A person who plans and directs all computer and peripheral operations, data entry, data control scheduling and quality control.
  • de bruijn notation — (language)   A variation of lambda notation for specifying functions using numbers instead of names to refer to formal parameters. A reference to a formal parameter is a number which gives the number of lambdas (written as \ here) between the reference and the lambda which binds the parameter. E.g. the function \ f . \ x . f x would be written \ . \ . 1 0. The 0 refers to the innermost lambda, the 1 to the next etc. The chief advantage of this notation is that it avoids the possibility of name capture and removes the need for alpha conversion.
  • de-differentiation — a process by which structures or behaviors that were specialized for a specific function lose their specialization and become simplified or generalized.
  • deanthropomorphism — the ridding of philosophy or religion of anthropomorphic beliefs and doctrines.
  • dear john (letter) — a letter from one's fiancée or girlfriend breaking off an engagement or love affair, or from one's wife asking for a divorce
  • debt restructuring — Debt restructuring is a method of organizing a company's debts in a different way in order to make the company more likely to be able to pay them.
  • dechristianization — The act of dechristianizing; the systematic removal of Christianity or Christian elements.
  • declaration of war — a formal statement made by one country to another that a state of war now exists between them
  • decompartmentalize — to remove excessive compartmentalization from (an organization)
  • defense calculator — IBM 701
  • demilitarized zone — an area from which military presence or function has been removed
  • demorgan's theorem — (logic)   A logical theorem which states that the complement of a conjunction is the disjunction of the complements or vice versa. In symbols: not (x and y) = (not x) or (not y) not (x or y) = (not x) and (not y) E.g. if it is not the case that I am tall and thin then I am either short or fat (or both). The theorem can be extended to combinations of more than two terms in the obvious way. The same laws also apply to sets, replacing logical complement with set complement, conjunction ("and") with set intersection, and disjunction ("or") with set union. A (C) programmer might use this to re-write if (!foo && !bar) ... as if (!(foo || bar)) ... thus saving one operator application (though an optimising compiler should do the same, leaving the programmer free to use whichever form seemed clearest).
  • dendrochronologist — One who carries out dendrochronology.
  • departmental store — a department store.
  • dependent variable — a variable in a mathematical equation or statement whose value depends on that taken on by the independent variable
  • derestriction sign — a circular white sign with a black diagonal band signifying the lifting of any other speed restriction
  • destruct mechanism — a mechanism that causes the destruction of a rocket or missile when activated
  • detective sergeant — a police officer who investigates crime and who ranks above a detective constable but below a detective inspector
  • determinate growth — growth of a plant stem that is terminated early by the formation of a bud
  • developing country — a nonindustrialized poor country that is seeking to develop its resources by industrialization
  • development period — a length of time during which a company grows
  • devil's paintbrush — a perennial European hawkweed (Hieracium aurantiacum) with leafless flower stalks bearing a cluster of orange-red heads: now a common weed in N U.S. and Canada
  • diamondback turtle — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
  • dielectric heating — the heating of a nonconducting substance caused by dielectric loss when the material is placed in a variable electric field.
  • dietary supplement — a substance taken in addition to what you eat in order to promote health
  • digital signatures — digital signature
  • dimethyltryptamine — a hallucinogenic drug, C 12 H 16 N 2 , with an action of short duration. Abbreviation: DMT.
  • diphtheria vaccine — a vaccine used to produce immunity against diphtheria
  • direct examination — the first interrogation of a witness by the side that has called that witness.
  • directional signal — any of four signal lights on the front left, front right, rear left, and rear right of an automotive vehicle that, when actuated by the driver, flash in pairs on the side toward which a turn is to be made.
  • discharge printing — a fabric-printing method in which the material is dyed and then certain areas are discharged so as to permit the original hue or its color replacement to act as a pattern against the colored ground.
  • disenfranchisement — to disfranchise.
  • disorderly conduct — any of various petty misdemeanors, generally including nuisances, breaches of the peace, offensive or immoral conduct in public, etc.
  • disproportionately — not proportionate; out of proportion, as in size or number.
  • distracted driving — driving a vehicle while engaging in an activity that has the potential to distract the driver from the task of driving: Bans on cell phone use in cars will help to reduce the dangers of distracted driving.
  • distress frequency — a radio frequency band reserved for emergency signals from aircraft or ships in distress.
  • distribution curve — the curve or line of a graph in which cumulative frequencies are plotted as ordinates and values of the variate as abscissas.
  • divergent thinking — thinking in an unusual and unstereotyped way, e.g. to generate several possible solutions to a problem
  • divine inspiration — insight provided by higher power
  • dna fingerprinting — the use of a DNA probe for the identification of an individual, as for the matching of genes from a forensic sample with those of a criminal suspect.
  • do a roaring trade — If someone does a roaring trade in a type of goods, they sell a lot of them.
  • doctype decoration — (humour)   When a web author adds a doctype declaration but doesn't bother to write valid HTML.
  • don't get me wrong — You say 'Don't get me wrong' when you want to make sure that someone does not get an incorrect idea about what you are doing or saying, or about why you are doing or saying it.
  • donor insemination — a process which involves using sperm which has been voluntarily given for use in the insemination of another person
  • dot matrix printer — (hardware, printer)   A kind of printer with a vertical column of up to 48 small closely packed needles or "pins" each of which can be individually forced forward to press an ink ribbon against the paper. The print head is repeatedly scanned across the page and different combinations of needles activated at each point. Dot matrix printers are noisy compared to non-impact printers.
  • dot-matrix printer — device: prints using matrix dots
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