22-letter words containing c, e, d
- 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
- 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.
- direct public offering — A direct public offering is stock offered directly for sale to investors by a company without the use of underwriters or brokers.
- 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.
- directed-energy device — beam weapon.
- 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
- dishonorable discharge — the discharge of a person from military service for an offense more serious than one for which a bad-conduct discharge is given.
- distributed processing — a system consisting of a network of microcomputers performing certain functions and linked with a main computer used for more complex tasks
- 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
- don't mind him/her etc — You use don't mind in expressions such as don't mind him or don't mind them to apologize for someone else's behaviour when you think it might have offended the person you are speaking to.
- double blackwall hitch — a kind of knot
- drumhead court-martial — a court-martial held, usually on a battlefield, for the summary trial of charges of offenses committed during military operations.
- dyadic systems limited — Dyalog Limited
- earth inductor compass — a compass actuated by induction from the earth's magnetic field.
- east greenland current — a cold ocean current of low salinity flowing south along the east coast of Greenland.
- economy-class syndrome — Economy-class syndrome is a serious medical condition caused by blood clots in the legs moving up to the lungs; used especially in connection with long-haul flights.
- educational psychology — a branch of psychology concerned with developing effective educational techniques and dealing with psychological problems in schools.
- educational technology — the use of technology, such as computers, within education, to aid the learning process
- educational television — television of informational or instructional content.
- emergency road service — a form of motoring insurance that sends assistance to drivers when their vehicles break down on a journey; it is provided either by the national or regional automobile association or by a private insurance company
- 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
- enhanced parallel port — (hardware) (EPP) A parallel port that confirms to the IEEE's EPP standard. An EPP is actually an expansion bus that can handle 64 disk drives and other peripherals.
- every now and then etc — You use every in the expressions every now and then, every now and again, every once in a while, and every so often in order to indicate that something happens occasionally.
- 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 crop insurance — insurance against the failure of certain crops provided to farmers and producers by the Federal Government
- 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
- fetal alcohol syndrome — a pattern of birth defects caused by maternal consumption of alcohol during pregnancy: considered as one of the fetal alcohol spectrum disorders. Abbreviation: FAS.
- 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".
- forced place insurance — Forced place insurance is insurance taken out by a bank or creditor on an uninsured debtor's behalf on a property that is being used as collateral.
- four-hundred-day clock — a clock that needs to be wound once a year, having the works exposed under a glass dome and utilizing a torsion pendulum.
- free and common socage — Medieval History. land held by a tenant who rendered certain honorable and nonservile duties to his lord.
- frequency distribution — the correspondence of a set of frequencies with the set of categories, intervals, or values into which a population is classified.
- 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.