20-letter words containing a, c, f
- cast the first stone — the hard substance, formed of mineral matter, of which rocks consist.
- catastrophic failure — Catastrophic failure is sudden and complete failure which cannot be put right.
- central bedfordshire — a unitary authority of S central England. Pop: 252 100 (2007 est). Area: 712 sq km (275 sq miles)
- centrifugal spinning — the spinning of rayon filaments in a centrifugal box.
- certificate of stock — stock certificate.
- certified accountant — (in Britain) a member of the Chartered Association of Certified Accountants, who is authorized to audit company accounts
- chapter of accidents — a series of misfortunes
- chauffeur-driven car — a car driven by a chauffeur
- chemical fingerprint — a distinctive characteristic or pattern indicating the presence of a certain molecule, used to identify a chemical.
- chronic inflammation — persistent infection or swelling
- clean bill of health — a good report of one's physical condition
- clean-bill-of-health — a certificate, carried by a ship, attesting to the presence or absence of infectious diseases among the ship's crew and at the port from which it has come.
- clothes manufacturer — a business concern that manufactures clothes
- college of cardinals — the collective body of cardinals having the function of electing and advising the pope
- college of education — a professional training college for teachers
- complete unification — (programming) W.P. Weijland's name for unification without occur check.
- confectioners' sugar — Confectioners' sugar is very fine white sugar that is used for making icing and candy.
- conformal projection — a map projection in which angles formed by lines are preserved: a map made using this projection preserves the shape of any small area.
- conservation of mass — the principle that the total mass of any isolated system is constant and is independent of any chemical and physical changes taking place within the system
- context of situation — the totality of extralinguistic features having relevance to a communicative act.
- context-free grammar — (grammar) (CFG) A grammar where the syntax of each constituent (syntactic category or terminal symbol) is independent of the symbols occuring before and after it in a sentence. A context-free grammar describes a context-free language. Context-free grammars can be expressed by a set of "production rules" or syntactic rules. For example, a language with symbols "a" and "b" that must occur in unequal numbers can be represented by the CFG: S → U | V U → TaU | TaT | UaT V → TbV | TbT | VbT T → aTbT | bTaT | ε meaning the top-level category "S" consists of either a "U" or a "V" and so on. The special category "ε" represents the empty string. This grammar is context-free because each rule has a single symbol on its left-hand side.
- correctional officer — a prison guard
- counter-inflationary — designed to reduce inflation
- counterproliferation — Action intended to prevent an increase or spread in the possession of nuclear weapons.
- court of last resort — (in the US) a supreme court
- court of st. james's — the British royal court: so called from St. James's Palace, London, the former scene of royal receptions.
- covenant of warranty — warranty (def 2b).
- covenant-of-warranty — warranty (def 2b).
- craft apprenticeship — a period of training for a skilled trade in industry, such as for a plumber or electrician
- cream of tomato soup — a creamy soup made from tomatoes
- curry favour with sb — If one person tries to curry favour with another, they do things in order to try to gain their support or co-operation.
- darkfield microscope — kind of microscope
- data dictionary file — (database) (DDF) A set of files describing the structure of a database file. DDFs define database tables and include information about file locations, field layouts and indexes. DDFs are the standard method for defining field and index characteristics for Btrieve files.
- de facto segregation — racial, ethnic, or other segregation resulting from societal differences between groups, as socioeconomic or political disparity, without institutionalized legislation intended to segregate.
- death of ivan ilyich — a short novel (1884) by Leo Tolstoy.
- decaffeinated coffee — Decaffeinated coffee is coffee that does not contain caffeine.
- dichloroethyl formal — a colorless liquid, C 5 H 10 O 2 Cl 2 , used chiefly as a solvent and in the manufacture of certain synthetic rubbers.
- difference amplifier — A difference amplifier is a device that amplifies the difference between two inputs, rejecting any signals common to both.
- differential pricing — a situation in which different prices are charged for the same product or service
- dirac delta function — delta function.
- discounted cash flow — a technique for appraising an investment that takes into account the different values of future returns according to when they will be received
- district of columbia — a federal area in the E United States, on the Potomac, coextensive with the federal capital, Washington. 69 sq. mi. (179 sq. km). Abbreviation: DC (for use with zip code), D.C.
- due process (of law) — the course of legal proceedings established by the legal system of a nation or state to protect individual rights
- ecological footprint — a mark left by the shod or unshod foot, as in earth or sand.
- edward the confessor — Saint, 1002?–66, English king 1042–66: founder of Westminster Abbey.
- effective computable — (theory) A term describing a function for which there is an effective algorithm that correctly calculates the function. The algorithm must consist of a finite sequence of instructions.
- effective resistance — the resistance to an alternating current, expressed as the ratio of the power dissipated to the square of the effective current.
- efficiency apartment — a small apartment consisting typically of a combined living room and bedroom area, a bathroom, and a kitchenette.
- embryo vitrification — a method of in vitro fertilization in which the embryo is exposed to a vitreous solution and frozen before being thawed and implanted into the uterus
- entry qualifications — the qualifications people wishing to enter an organization, university, etc, have to have