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22-letter words containing a, d, r, i, t, c

  • dalton's atomic theory — the theory that matter consists of indivisible particles called atoms and that atoms of a given element are all identical and can neither be created nor destroyed. Compounds are formed by combination of atoms in simple ratios to give compound atoms (molecules). The theory was the basis of modern chemistry
  • decompartmentalization — the act of decompartmentalizing
  • delayed-action shutter — a camera shutter that opens after an interval set by the photographer
  • descriptive cataloging — the aspect of cataloging concerned with the bibliographic and physical description of a book, recording, or other work, accounting for such items as author or performer, title, edition, and imprint as opposed to subject content.
  • descriptive statistics — the use of statistics to describe a set of known data in a clear and concise manner, as in terms of its mean and variance, or diagrammatically, as by a histogram
  • diachronic linguistics — historical linguistics.
  • dicyclopentadienyliron — ferrocene (def 1).
  • diethylbarbituric acid — barbital
  • digital control system — (systems)   (DCS) A digital computer used for real-time control of a dynamic system, usually in an industrial environment, possibly as part of a Supervisory Control and Data Acquisition (SCADA) system. A DCS samples feedback from the system under control and modifies the control signals in an attempt to achieve some desired behaviour. Analysis of such digital-analogue feedback systems can involve mathematical methods such as difference equations, Laplace transforms, z transfer functions, state space models and state transition matrices.
  • digital versatile disc — (storage)   (DVD, formerly "Digital Video Disc") An optical storage medium with improved capacity and bandwidth compared with the Compact Disc. DVD, like CD, was initally marketed for entertainment and later for computer users. [When was it first available?] A DVD can hold a full-length film with up to 133 minutes of high quality video, in MPEG-2 format, and audio. The first DVD drives for computers were read-only drives ("DVD-ROM"). These can store 4.7 GBytes - over seven times the storage capacity of CD-ROM. DVD-ROM drives read existing CD-ROMs and music CDs and are compatible with installed sound and video boards. Additionally, the DVD-ROM drive can read DVD films and modern computers can decode them in software in real-time. The DVD video standard was announced in November 1995. Matshusita did much of the early development but Philips made the first DVD player, which appeared in Japan in November 1996. In May 2004, Sony released the first dual-layer drive, which increased the disc capacity to 8.5 GB. Double-sided, dual-layer discs will eventually increase the capacity to 17 GB. Write-once DVD-R ("recordable") drives record a 3.9GB DVD-R disc that can be read on a DVD-ROM drive. Pioneer released the first DVD-R drive on 1997-09-29. By March 1997, Hitachi had released a rewritable DVD-RAM drive (by false analogy with random-access memory). DVD-RAM drives read and write to a 2.6 GB DVD-RAM disc, read and write-once to a 3.9GB DVD-R disc, and read a 4.7 GB or 8.5 GB DVD-ROM. Later, DVD-RAM discs could be read on DVD-R and DVD-ROM drives.
  • digital video recorder — See DVR.
  • dilation and curettage — a surgical method for the removal of diseased tissue or an early embryo from the lining of the uterus by means of scraping.
  • directed acyclic graph — (DAG) A directed graph containing no cycles. This means that if there is a route from node A to node B then there is no way back.
  • directional derivative — the limit, as a function of several variables moving along a given line from one specified point to another on the line, of the difference in the functional values at the two points divided by the distance between the points.
  • directional microphone — a microphone that has a greater sensitivity to sounds coming from a particular area in front of it: used to eliminate unwanted sounds.
  • director of admissions — a member of a university staff who is in overall charge of admissions to the university and its courses
  • directory system agent — (DSA) The software that provides the X.500 Directory Service for a portion of the directory information base. Generally, each DSA is responsible for the directory information for a single organisation or organisational unit.
  • disciplinary committee — a committee charged with examining alleged breaches of discipline within an organization, profession, etc and adjudicating on them
  • distributive education — a special program of vocational education at the high-school level in which a student is employed part-time, receiving on-the-job training, and also attends classes, most of which pertain directly to the student's vocational field.
  • dominant seventh chord — a chord consisting of the dominant and the major third, perfect fifth, and minor seventh above it. Its most natural resolution is to a chord on the tonic
  • drumhead court-martial — a court-martial held, usually on a battlefield, for the summary trial of charges of offenses committed during military operations.
  • earth inductor compass — a compass actuated by induction from the earth's magnetic field.
  • enchanter's nightshade — any of several onagraceous plants of the genus Circaea, esp C. lutetiana, having small white flowers and bristly fruits
  • end transmission block — (character)   (ETB) The mnemonic for ASCII character 23.
  • endotrophic mycorrhiza — the most widespread and common type of mycorrhiza, in which the fungus lives within the cells of the roots of the plant
  • experimental condition — one of the distinct states of affairs or values of the independent variable for which the dependent variable is measured in order to carry out statistical tests or calculations
  • federal district court — district court (def 2).
  • fermi-dirac statistics — the branch of quantum statistics used to calculate the permitted energy arrangements of the particles in a system in terms of the exclusion principle
  • financial underwriting — Financial underwriting is the process of assessing whether the proposed sum insured and product are reasonable when considering the possible financial loss to the client.
  • fitzgerald contraction — the hypothesis that a moving body exhibits a contraction in the direction of motion when its velocity is close to the speed of light.
  • fixed point combinator — (mathematics)   (Y) The name used in combinatory logic for the fixed point function, also written as "fix".
  • forth modification lab — (event)   (FORML) A Forth conference held every November on the West coast of the USA ().
  • generalized coordinate — Usually, generalized coordinates. one of a minimum set of coordinates needed to specify the state or position of a given system.
  • genitourinary medicine — the branch of medical science concerned with the study and treatment of diseases of the genital and urinary organs, esp sexually transmitted diseases
  • geographic determinism — a doctrine that regards geographical conditions as the determining or molding agency of group life.
  • graphical display unit — an output device incorporating a cathode ray tube on which both line drawings and text can be displayed. It is usually used in conjunction with a light pen to input or reposition data
  • gross national product — the total monetary value of all final goods and services produced in a country during one year. Abbreviation: GNP.
  • hans christian oersted — Hans Christian [hahns kris-tyahn] /hɑns ˈkrɪs tyɑn/ (Show IPA), 1777–1851, Danish physicist.
  • harvard classification — a classification of stars based on the characteristic spectral absorption lines and bands of the chemical elements present
  • horn-rimmed spectacles — spectacles with rims made of material resembling horn
  • human interface device — (hardware)   (HID) Any device to interact directly with humans (mostly input) like keyboard, mouse, joystick, or graphics tablet.
  • independent contractor — self-employed or freelance worker
  • indeterminate cleavage — the division of an egg into cells, each of which has the potential of developing into a complete organism
  • indeterminate sentence — a penalty, imposed by a court, that has relatively wide limits or no limits, as one of imprisonment for one to ten years.
  • industrial archaeology — the study of past industrial machines, works, etc
  • industrialized country — a country characterized by industry on an extensive scale
  • interactive whiteboard — a smooth, glossy sheet of white plastic that can be written on with a colored pen or marker in the manner of a blackboard.
  • intermediate frequency — the middle frequency in a superheterodyne receiver, at which most of the amplification takes place. Abbreviation: if.
  • intermetallic compound — a compound of two or more metals.
  • it's london to a brick — it is certain
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