23-letter words containing o, d, n, t
- 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
- 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.
- 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.
- de-compartmentalization — to divide into categories or compartments.
- 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.
- 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.
- direct characterization — the process by which the personality of a fictitious character is revealed by the use of descriptive adjectives, phrases, or epithets.
- direct primary election — a preliminary election at which candidates for public office are chosen by direct vote of the people instead of by delegates at a convention: in closed primary elections voters must declare party affiliation and may vote only for candidates of their party
- discontinuous variation — variation in phenotypic traits in which types are grouped into discrete categories with few or no intermediate phenotypes. Compare continuous variation.
- discrimination learning — a learning process in which an organism learns to react differently to different stimuli
- disintegration constant — decay constant.
- disjunctive normal form — (DNF) A logical formula consisting of a disjunction of conjunctions where no conjunction contains a disjunction. E.g. the DNF of (A or B) and C is (A and C) or (B and C).
- dissociate oneself from — to deny or repudiate any connection with
- dissociative extraction — Dissociative extraction is when a component is divided between two liquids, which involves breakdown of the component.
- do someone's dirty work — To do someone's dirty work means to do a task for them that is dishonest or unpleasant and which they do not want to do themselves.
- do someone's heart good — to make someone happy; please someone
- dollar (cost) averaging — see average (sense 11)
- draw/make a distinction — If you draw a distinction or make a distinction, you say that two things are different.
- drawing exchange format — (DXF) A file format for graphical information, similar to IGES. Commonly used by CAD systems like AutoCAD.
- dressed up to the nines — If you say that someone is dressed up to the nines or dressed to the nines, you mean that they are wearing very smart or elegant clothes.
- drive sb round the bend — If you say that someone or something drives you round the bend, you mean that you dislike them and they annoy or upset you very much.
- drop into someone's lap — to cause to be someone's responsibility
- drummond of hawthornden — William. 1585–1649, Scottish poet, historian, and royalist pamphleteer
- dual sensory impairment — the condition of being affected by sight and hearing loss
- duplication of the cube — the insoluble problem of constructing a cube having twice the volume of a given cube, using only a ruler and compass.