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17-letter words containing r, i, d

  • diethyltryptamine — a synthetic derivative of tryptamine with hallucinogenic and psychotogenic effects. Abbreviation: DET.
  • dietrich von bern — Theodoric of Verona: the name of the eastern Gothic emperor Theodoric as it appears in German legends.
  • dieu et mon droit — God and my right: motto of the Royal Arms of Great Britain
  • difference engine — (computer, history)   Charles Babbage's design for the first automatic mechanical calculator. The Difference Engine was a special purpose device intended for the production of mathematical tables. Babbage started work on the Difference Engine in 1823 with funding from the British Government. Only one-seventh of the complete engine, about 2000 parts, was built in 1832 by Babbage's engineer, Joseph Clement. This was demonstrated successfully by Babbage and still works perfectly. The engine was never completed and most of the 12,000 parts manufactured were later melted for scrap. It was left to Georg and Edvard Schuetz to construct the first working devices to the same design which were successful in limited applications. The Difference Engine No. 2 was finally completed in 1991 at the Science Museum, London, UK and is on display there. The engine used gears to compute cumulative sums in a series of registers: r[i] := r[i] + r[i+1]. However, the addition had the side effect of zeroing r[i+1]. Babbage overcame this by simultaneously copying r[i+1] to a temporary register during the addition and then copying it back to r[i+1] at the end of each cycle (each turn of a handle).
  • differentiability — The ability to be differentiated.
  • 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
  • digital dashboard — (software)   A personalised desktop portal that focuses on business intelligence and knowledge management.
  • digital footprint — one's unique set of digital activities, actions, and communications that leave a data trace on the Internet or on a computer or other digital device and can identify the particular user or device: Our online browsing habits are part of our passive digital footprint, created without our consent or knowledge, but our active digital footprint, especially on social media, can more easily be managed. Compare footprint (def 4).
  • digital immigrant — a person who has become familiar with computers, the Internet, and other digital technology as a young adult or later in life. Compare digital native.
  • digital recording — a method of sound recording in which an input audio waveform is sampled at regular intervals, usually between 40,000 and 50,000 times per second, and each sample is assigned a numerical value, usually expressed in binary notation.
  • digital signature — an encrypted digital code appended to an electronic document to verify that it was created by a known source and has not been altered.
  • dihydroergotamine — an ergot alkaloid, C 33 H 37 N 5 O 5 , used in the treatment of various types of migraine headache.
  • dihydromorphinone — a narcotic compound, C 17 H 19 O 3 N, prepared from morphine and used chiefly as an analgesic.
  • dimethylformamide — a colourless liquid widely used as a solvent and sometimes as a catalyst. Formula: (CH3)2NCHO
  • dimethylhydrazine — a flammable, highly toxic, and colorless liquid, C 2 H 8 N 2 , used as a component in jet and rocket fuels.
  • dining room suite — a set of furniture used in a dining room
  • dipterocarpaceous — of, relating to, or belonging to the Dipterocarpaceae, a family of trees chiefly native to tropical SE Asia, having two-winged fruits. Many species yield useful timber and resins
  • direct connection — A re-seller of Internet connections to the PIPEX backbone.
  • directionlessness — Absence of direction.
  • 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
  • directory service — (database, networking)   A structured repository of information on people and resources within an organisation, facilitating management and communication. On a LAN or WAN the directory service identifies all aspects of the network including users, software, hardware, and the various rights and policies assigned to each. As a result applications can access information without knowing where a particular resource is physically located, and users interact oblivious to the network topology and protocols. To allow heterogeneous networks to share directory information the ITU proposed a common structure called X.500. However, its complexity and lack of seamless Internet support led to the development of Lightweight Directory Access Protocol (LDAP) which has continued to evolve under the aegis of the IETF. Despite its name LDAP is too closely linked to X.500 to be "lightweight".
  • dirt track racing — motorcycle racing on a dirt track
  • disaster planning — disaster recovery
  • disaster recovery — (business)   (DR) Planning and implementation of procedures and facilities for use when essential systems are not available for a period long enough to have a significant impact on the business, e.g. when the head office is blown up. Disasters include natural: fire, flood, lightning, hurricane; hardware: power failure, component failure, head crash; software failure: bugs, resources; vandalism: arson, bombing, cracking, theft; data corruption or loss: human error, media failure; communications: computer network equipment, network storm, telephones; security: passwords compromised, computer virus; legal: change in legislation; personnel: unavailability of essential staff, industrial action. Companies need to plan for disaster: before: risk analysis, preventive measures, training; during: how should staff and systems respond; after: recovery measures, post mortem analysis. Hardware can usually be replaced and is usually insured. Software and data needs to be backed up off site. Alternative communication systems should be arranged in case of network failure or inaccessible premises, e.g. emergency telephone number, home working, alternative data center.
  • discreditableness — Quality of being discreditable.
  • discrete preorder — (mathematics)   A preorder is said to be discrete if any two of its elements are incomparable.
  • discrete variable — a variable that may assume only a countable, and usually finite, number of values.
  • dishonourableness — Alternative spelling of dishonorableness.
  • disinterestedness — unbiased by personal interest or advantage; not influenced by selfish motives: a disinterested decision by the referee.
  • disintermediation — the act of removing funds from savings banks and placing them into short-term investments on which the interest-rate yields are higher.
  • disorderly person — a person guilty of disorderly conduct.
  • dispersive medium — a substance in which waves of different frequencies travel at different speeds
  • display standards — display standard
  • disproportionally — not in proportion; disproportionate.
  • disproportionates — Third-person singular simple present indicative form of disproportionate.
  • disrespectability — Lack of respectability.
  • disrespectfulness — The state or quality of being disrespectful; disrespect; disregard.
  • disruptive action — action performed by protestors, workers, etc that causes the disruption of a service
  • dissipation trail — a clear rift left behind an aircraft flying through a thin cloud layer.
  • dissociated press — [Play on "Associated Press"; perhaps inspired by a reference in the 1949 Bugs Bunny cartoon "What's Up, Doc?"] An algorithm for transforming any text into potentially humorous garbage even more efficiently than by passing it through a marketroid. The algorithm starts by printing any N consecutive words (or letters) in the text. Then at every step it searches for any random occurrence in the original text of the last N words (or letters) already printed and then prints the next word or letter. Emacs has a handy command for this. Here is a short example of word-based Dissociated Press applied to an earlier version of the Jargon File: wart: A small, crocky feature that sticks out of an array (C has no checks for this). This is relatively benign and easy to spot if the phrase is bent so as to be not worth paying attention to the medium in question. Here is a short example of letter-based Dissociated Press applied to the same source: window sysIWYG: A bit was named aften /bee't*/ prefer to use the other guy's re, especially in every cast a chuckle on neithout getting into useful informash speech makes removing a featuring a move or usage actual abstractionsidered interj. Indeed spectace logic or problem! A hackish idle pastime is to apply letter-based Dissociated Press to a random body of text and vgrep the output in hopes of finding an interesting new word. (In the preceding example, "window sysIWYG" and "informash" show some promise.) Iterated applications of Dissociated Press usually yield better results. Similar techniques called "travesty generators" have been employed with considerable satirical effect to the utterances of Usenet flamers; see pseudo.
  • dissolve in tears — weep
  • distance learning — education in which students receive instruction over the Internet, from a video, etc., instead of going to school.
  • distillers' grain — a by-product of the distillation process for making whisky, used as an animal foodstuff
  • distributed force — A distributed force is a force that acts on a large part of a surface, not just on one place.
  • distributed logic — a computer system in which remote terminals and electronic devices, distributed throughout the system, supplement the main computer by doing some of the computing or decision making
  • distribution cost — a cost incurred by a distributor or in the distribution of something
  • distribution line — A distribution line is a line or system for distributing power from a transmission system to a consumer that operates at less than 69,000 volts.
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