23-letter words containing n, d, t
- chief education officer — an official who is the chief administrative officer of a Local Education Authority
- chorionic gonadotrophin — a hormone secreted by the chorionic villi of the placenta in mammals, esp human chorionic gonadotrophin. It promotes the secretion of progesterone by the corpus luteum and its presence in the urine is an indication of pregnancy
- chronic wasting disease — a disease found among members of the deer family, a type of transmissible spongiform encephalopathy
- circumstantial evidence — indirect evidence that tends to establish a conclusion by inference
- citizens' advice bureau — an independent charity where the public can obtain free, confidential information and advice on an extensive range of civil, consumer, and legal matters
- citrus greening disease — Plant Pathology. a bacterial disease of citrus trees, transmitted by insects of the Psyllidae family.
- civil aeronautics board — the former federal agency (1938–85) that regulated airline fares and assigned routes. Abbreviation: CAB, C.A.B.
- classification schedule — the printed scheme of a system of classification
- client-centered therapy — a nondirective method of psychotherapy in which treatment consists of helping patients to use effectively their own latent resources in solving problems.
- come to one's knowledge — to become known to one
- commonwealth of england — commonwealth (def 5).
- communication breakdown — a lack of communication; a failure to exchange information
- community-service order — (in Britain) a court order requiring an offender over seventeen years old to do unpaid socially beneficial work under supervision instead of going to prison
- comparative advertising — a form of advertising in which a product is compared favourably with similar products on the market
- complain about the food — If you complain about the food, you say that you are not satisfied with it.
- computer-aided learning — Computer-Aided Instruction
- computer-based training — Computer-Aided Instruction
- concrete data structure — (theory) (CDS) A model of programming language terms developed in the context of constructing fully abstract semantics for sequential languages. A CDS is a 4-tuple (C,V,E,|-) where C is a cell, V is a value, E is an event and |- is an "enabling relation". An event is a cell and a value. A cell C is "enabled" by a set of events S if S |- C. A state is a set of events which are consistent in that the values they give for any cell are all equal. Every cell in a state is enabled.
- condition code register — a hardware register used for storing the current values of the condition codes
- conditional convergence — the property of an infinite series that converges while the series formed by replacing each term in the given series with its absolute value diverges; the property of an infinite series that converges when the order of the terms is altered. Compare absolute convergence (def 1).
- conditional probability — the probability of one event, A, occurring given that another, B, is already known to have occurred: written P(A|B) and equal to P(A and B)|P(B)
- conditioned suppression — the reduction in the frequency of a learned response, e.g. pressing a bar for water, that occurs when a stimulus previously associated with pain is present
- consolidated deliveries — deliveries of goods to different shops in a common location by a single carrier and in a single vehicle
- constructive cost model — (programming) (COCOMO) A method for estimating the cost of a software package, proposed by Dr Barry Boehm. The Basic COCOMO Model estimates the effort required to develop software in three modes of development (Organic Mode, Semidetached Mode, or Embedded Mode) using only DSIs as an input. The Basic model is good for quick estimates. The Intermediate Model extends the Basic Model with an Effort Adjustment Factor (EAF) and different coefficients for the effort equation. The user supplies settings for cost drivers that determine the effort and duration of the software projects. It also allows DSI values and cost drivers to be chosen for individual components instead of for the system as a whole. The Detailed COCOMO Model uses effort multipliers for each phase of the project and provides a three-level product hierarchy and has some other capabilities such as a procedure for adjusting the phase distribution of the development schedule.
- cordillera de talamanca — a mountain range running SE from central Costa Rica to W Panama.
- corridor of uncertainty — an area of a wicket just outside a batsman's off stump, so located that the batsman will have difficulty in deciding whether or not to play a ball bowled into it
- credit-reference agency — an agency, other than a bank, that specializes in providing credit ratings of people or organizations
- cylindrical coordinates — three coordinates defining the location of a point in three-dimensional space in terms of its polar coordinates (r, θ) in one plane, usually the (x, y) plane, and its perpendicular distance, z, measured from this plane
- d'arsonval galvanometer — a galvanometer consisting of a large, fixed magnet and a light coil that swings in the magnetic field.
- d'entrecasteaux islands — a group of volcanic islands in the Pacific, off the SE coast of New Guinea: part of Papua New Guinea. Pop: 49 167 (1990 est). Area: 3141 sq km (1213 sq miles)
- dacryocystorhinostomies — Plural form of dacryocystorhinostomy.
- dark-field illumination — illumination of the field of a microscope from the side so that the specimen is viewed against a dark background
- data acquisition system — A data acquisition system is a system that acquires data, generally by digitizing analog channels and storing the data in digital form.
- data terminal equipment — (communications, hardware) (DTE) A device which acts as the source and/or destination of data and which controls the communication channel. DTE includes terminals, computers, protocol converters, and multiplexors. DTE is usually connected via an EIA-232 serial line to Data Communication Equipment (DCE), typically a modem. It is necessary to distinguish these two types of device because their connectors must be wired differently if a "straight-through" cable (pin 1 to pin 1, pin 2 to pin 2 etc.) is to be used. DTE should have a male connector and should transmit on pin three and receive on pin two. It is a curious fact that many modems are actually "DTE" according to the original standard.
- database query language — (database) A language in which users of a database can (interactively) formulate requests and generate reports. The best known is SQL.
- de-compartmentalization — to divide into categories or compartments.
- debugging an empty file — (programming, humour) A humourous definition of programming that considers a complete absence of any code as a bug to be fixed.
- decision support system — a system in which one or more computers and computer programs assist in decision-making by providing information
- delayed stress reaction — a post-traumatic stress disorder occurring more than six months after the experience of a traumatic event.
- department of education — the department of the U.S. federal government that administers federal programs dealing with education: created in 1979, largely by transfer from part of the former Department of Health, Education, and Welfare. Abbreviation: ED.
- descriptive linguistics — the study of the description of the internal phonological, grammatical, and semantic structures of languages at given points in time without reference to their histories or to one another
- deterministic automaton — (theory) A finite-state automaton in which the overall course of the computation is completely determined by the program, the starting state, and the initial inputs. The class of problems solvable by such automata is the class P (see polynomial-time algorithm).
- development environment — (programming, tool) An integrated suite of tools to aid the development of software in a particular language or for a particular application. Usually, this consists of a compiler and editor and may also include one or more of a debugger, profiler, and source code manager. See also: IDE.
- diamondback rattlesnake — either of two large, highly venomous rattlesnakes of the genus Crotalus, having diamond-shaped markings on the back.
- dichlorodifluoromethane — a colourless nonflammable gas easily liquefied by pressure: used as a propellant in aerosols and fire extinguishers and as a refrigerant. Formula: CCl2F2
- dictionary of computing — Free On-line Dictionary of Computing
- die with one's boots on — a covering of leather, rubber, or the like, for the foot and all or part of the leg.
- differentiable manifold — a manifold having the property that any two overlapping open sets are homeomorphic to locally Euclidean spaces whose coordinates are related by differentiable functions, a property with wide applications in mathematical physics and differential geometry.
- differential compaction — differences in the extent to which sediment is compacted owing to topographic irregularities of the surface on which it is deposited.
- differential psychology — the branch of psychology dealing with the study of characteristic differences or variations of groups or individuals, especially through the use of analytic techniques and statistical methods.