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19-letter words containing t, i, n, e

  • diethylaminoethanol — a colorless, hygroscopic, water-soluble liquid, C 6 H 15 NO, used for the synthesis of local anesthetics, in antirust compounds, and in photographic emulsions.
  • difference equation — (mathematics)   A relation between consecutive elements of a sequence. The first difference is D u(n) = u(n+1) - u(n) where u(n) is the nth element of sequence u. The second difference is u(n+2) + a u(n+1) + b u(n) = 0 can be converted to a difference equation (in this case, a second order linear difference equation): D2 u(n) + p D u(n) + q u(n) = 0 and vice versa. a, b, p, q are constants.
  • differential backup — (operating system)   A kind of backup that copies all files that have changed since the last full backup. Each differential backup will include all files in previous differential backups since the full backup so to restore a version of a file, you only need to search the full backup and the relevant differential backup. Some systems support differential backup by associating an "Archive" flag with each file and setting this flag whenever the file is modified to indicate that it should be included in the next backup. A differential backup does not change this flag, whereas an incremental backup resets it.
  • differential driver — (hardware)   An electronic device (commonly an integrated circuit), containing two amplifiers, used to drive a differential line.
  • diffraction pattern — the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow.
  • digital electronics — (electronics)   The implementation of two-valued logic using electronic logic gates such as and gates, or gates and flip-flops. In such circuits the logical values true and false are represented by two different voltages, e.g. 0V for false and +5V for true. Similarly, numbers are normally represented in binary using two different voltages to represented zero and one. Digital electronics contrasts with analogue electronics which represents continuously varying quantities like sound pressure using continuously varying voltages. Digital electronics is the foundation of modern computers and digital communications. Massively complex digital logic circuits with millions of gates can now be built onto a single integrated circuit such as a microprocessor and these circuits can perform millions of operations per second.
  • digital linear tape — (storage)   (DLT) A kind of magnetic tape drive originally developed by DEC and now marketed by Quantum. DLT drives implement the Digital Lempel Ziv 1 (DLZ1) compression algorithm in a combination of hardware and firmware. They use a popular chip by Stac (now hi/fn) to do the string searching. Counting, sorting and Huffman coding are done in firmware (with hardware support for the Huffman algorithm?). In April 1997 DLT drives can transfer 5 megabytes per second and can store 35 gigabytes on a single cartridge. Compression might roughly double these figures.
  • dihydrostreptomycin — an antibiotic, C 21 H 41 N 7 O 12 , derived by organic synthesis from and believed to be less toxic than streptomycin: used in the form of its sulfate chiefly in the treatment of tuberculosis.
  • dihydrotestosterone — (steroid) An androgenic metabolite of testosterone; used to treat certain breast cancers.
  • dimethylnitrosamine — a yellow, water-soluble carcinogenic liquid, C 2 H 6 N 2 O, found in tobacco smoke and certain foods: known to be a potent carcinogen. Abbreviation: DMN, DMNA.
  • dimetric projection — a type of axonometric projection in which the object is shown with two of its three principal axes tilted equally from the plane of viewing
  • diminishing returns — any rate of profit, production, benefits, etc., that beyond a certain point fails to increase proportionately with added investment, effort, or skill.
  • direct grant school — (in Britain, formerly) a school financed by endowment, fees, and a state grant conditional upon admittance of a percentage of nonpaying pupils nominated by the local education authority
  • direct-vision prism — Amici prism.
  • direction indicator — aerial used in wireless communication
  • directional coupler — (communications)   (tap) A passive device used in cable systems to divide and combine radio frequency signals. A directional coupler has at least three ports: line in, line out, and the tap. The signal passes between line in and line out ports with loss referred to as the insertion loss. A small portion of the signal power applied to the line in port passes to the tap port. A signal applied to the tap port is passed to the line in port less the tap attenuation value. The tap signals are isolated from the line out port to prevent reflections. A signal applied to the line out port passes to the line in port and is isolated from the tap port. Some devices provide more than one tap output line (multi-taps).
  • directory enquiries — Directory enquiries is a service which you can telephone to find out someone's telephone number.
  • diriment impediment — a fact or circumstance that renders a marriage void from the beginning.
  • disablement benefit — (in Britain) a noncontributory benefit payable to a person disabled through injury or disease caused by their work
  • disadvantageousness — The state or quality of being disadvantageous.
  • disambiguation page — a page on a website that lists various websites or web pages that have or could have the same title. The user is able to select from the list that page, site etc that he or she actually wants
  • discretionary trust — a trust in which the beneficiaries' shares are not fixed in the trust deed but are left to the discretion of other persons, often the trustees
  • discriminated union — (theory)   The discriminated union of two sets A and B is A + B = {(inA, a) | a in A} U {(inB, b)| b in B} where inA and inB are arbitrary tags which specify which summand an element originates from. A type (especially an algebraic data type) might be described as a discriminated union if it is a sum type whose objects consist of a tag to say which part of the union they belong to and a value of the corresponding type.
  • discussion document — a document that puts forward some ideas or opinions that might form the basis of a discussion of a particular topic
  • disenfranchisements — Plural form of disenfranchisement.
  • disjunctive pronoun — an inflection of pronouns in some languages that is used alone or after a preposition, such as moi in French
  • dispatch department — the department of an organization responsible for the dispatch of orders
  • dispersion relation — the relationship between the angular frequency (ω;) of a wave and the magnitude of its wave vector (k). Thus the wave's speed is ω/k
  • displacement engine — any engine employing the rectilinear motion of one or more pistons in cylinders.
  • display advertising — display ads taken collectively.
  • disseminated cancer — a cancerous tumour that has spread from the site of original growth to a secondary site
  • distance university — a degree-granting institution operating wholly or mainly by correspondence courses for students not resident on or within commuting distance of the campus.
  • distinctive feature — a feature of the sound system of a language that serves as the crucial distinguishing mark between two phonemes, as the distinctive feature of voicing, which distinguishes b from p in English, or nasality, which distinguishes m from b and p.
  • distinguishableness — The state or quality of being distinguishable.
  • distribution system — The distribution system is the part of an electric system after the transmission system that is dedicated to delivering electric energy to an end user.
  • diversional therapy — the structured use of leisure time in recreation and play as a form of or supplement to conventional therapy
  • do the decent thing — If you say that someone should do the decent thing, you mean that they should do something which they do not really want to do, but which you think they ought to do.
  • dobsonian telescope — a relatively inexpensive Newtonian telescope, suitable for visual but not photographic use, in which the tube assembly slips freely in the lower base.
  • doctrine of descent — the theory that animals and plants arose by descent from previously existing organisms; theory of evolution
  • domain architecture — (systems analysis)   A generic, organisational structure or design for software systems in a domain. The domain architecture contains the designs that are intended to satisfy requirements specified in the domain model. A domain architecture can be adapted to create designs for software systems within a domain and also provides a framework for configuring assets within individual software systems.
  • dominant wavelength — the wavelength of monochromatic light that would give the same visual sensation if combined in a suitable proportion with an achromatic light
  • double counterpoint — invertible counterpoint using two transposable voices.
  • double-density disk — a disk with more than the normal capacity for storage
  • draw the color line — to impose or accept the color line
  • draw the curtain on — to end
  • dred scott decision — Barbara Ann, 1928–2012, Canadian figure skater.
  • drink the health of — to salute or celebrate with a toast
  • duplicating machine — a duplicator, especially one for making identical copies of documents, letters, etc.
  • dwight d eisenhower — Dwight David ("Ike") 1890–1969, U.S. general and statesman: Chief of Staff 1945–48; 34th president of the U.S. 1953–61.
  • earthquake engineer — a civil engineer who studies the effects of seismic activity on structures and consults on earthquake-resistant design and construction.
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