22-letter words containing a, d, c, o
- communication disorder — any of a number of disorders, as autism or deafness, that partially or totally prevent verbal or written expression or comprehension.
- compass deviation card — a card, sheet, or the like, with two compass roses printed on it concentrically, for recording, on a given voyage, the amount of deviation for which the navigator must compensate in using the ship's compass to steer a magnetic course.
- complementary medicine — the treatment, alleviation, or prevention of disease by such techniques as osteopathy, homeopathy, aromatherapy, and acupuncture, allied with attention to such factors as diet and emotional stability, which can affect a person's wellbeing
- complete quadrilateral — a polygon consisting of four lines and their six points of intersection
- compound annual return — the total return available from an investment, deposit, etc, when the interest earned is used to augment the capital
- compulsory liquidation — the liquidation of a business in order to settle its debts
- concentration gradient — the gradual difference in concentration of a dissolved substance in a solution between a region of high density and one of lower density.
- congressional district — (in the US) an electoral division of a state, entitled to send one member to the US House of Representatives
- constructive dismissal — If an employee claims constructive dismissal, they begin a legal action against their employer in which they claim that they were forced to leave their job because of the behaviour of their employer.
- contextual advertising — a form of targeted advertising used on websites or other media, such as content displayed in mobile browsers
- continuous welded rail — a long, continuous rail formed by welding many short rails.
- contradiction in terms — a term, phrase, or phenomenon containing self-contradictory parts
- coronary heart disease — any heart disorder caused by disease of the coronary arteries
- corporate headquarters — the main offices of a corporation, from where it runs its business
- cross the great divide — to die
- curly-coated retriever — a strongly built variety of retriever with a tightly curled black or liver-coloured coat
- curriculum coordinator — a member of a teaching staff with a largely administrative function whose job is to ensure that a curriculum is effectively taught
- cyclic redundancy code — cyclic redundancy check
- cylindrical coordinate — Usually, cylindrical coordinates. a member of a system of coordinates for locating a point in space by its polar coordinates and its perpendicular distance to the polar plane.
- cytidine monophosphate — a nucleotide constituent of ribonucleic acids; a phosphoric acid ester of cytidine. Abbreviation: CMP.
- 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
- debt collection agency — a company that collects debts on behalf of creditors
- decimal classification — a system of classifying books in libraries by the use of numbers with decimals
- decompartmentalization — the act of decompartmentalizing
- delayed-action shutter — a camera shutter that opens after an interval set by the photographer
- denominational college — a college associated with a particular religious denomination
- denotational semantics — (theory) A technique for describing the meaning of programs in terms of mathematical functions on programs and program components. Programs are translated into functions about which properties can be proved using the standard mathematical theory of functions, and especially domain theory. Compare axiomatic semantics, operational semantics, standard semantics.
- department of commerce — the department of the U.S. federal government that promotes and administers domestic and foreign commerce. Abbreviation: DOC.
- 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.
- diachronic linguistics — historical linguistics.
- dicyclopentadienyliron — ferrocene (def 1).
- 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 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.
- 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.
- 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
- 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.
- earth inductor compass — a compass actuated by induction from the earth's magnetic field.
- 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